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Counterintuitive result for FullSimplify of expressions with Re

QUESTION FROM: Andy Ross | 13 years ago BY: Sjoerd de Vries
Algebra , Calculus , Mathematica , Wolfram Language
6
REPLIES
9K
VIEWS

Why doesn't Wolfram compute Ceiling[x] = 1 + Floor[x]?

QUESTION FROM: Sasha Mandra | 11 months ago BY: Michael Rogers
Algebra , Mathematics , Wolfram Language
16
REPLIES
3.2K
VIEWS

Is it possible to use explicit quartics solution for solving biquadratics?

QUESTION FROM: Yuriy Ivanov | 12 years ago BY: Yuriy Ivanov
Algebra , Equation Solving , Mathematica , Wolfram Language
26
REPLIES
10.8K
VIEWS

The Dot Operator vs Standard Matrix Multiplication

QUESTION FROM: Frank Kampas | 4 years ago BY: Gianluca Gorni
Algebra , Mathematica , Wolfram Language
19
REPLIES
41.2K
VIEWS

Solve an elementary quadratic equation?

QUESTION FROM: Valeriu Ungureanu | 9 years ago BY: Valeriu Ungureanu
Algebra , Education , Equation Solving , Mathematics , ...
10
REPLIES
13.9K
VIEWS

Solve and NSolve not working well with Quantity and Units?

QUESTION FROM: Francis Bush | 6 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematics , Numerical Computation , ...
44
REPLIES
19K
VIEWS

Calculate minimum common differences?

QUESTION FROM: Luis Felipe Massena Misiec | 7 years ago BY: Luis Felipe Massena Misiec
Algebra , Calculus , Equation Solving , Mathematics , Wolfram Language
13
REPLIES
14.6K
VIEWS

Error: Solve was unable to solve the system with inexact coefficients.

QUESTION FROM: steve ma | 11 years ago BY: Frank Kampas
Algebra , Equation Solving , Mathematica , Wolfram Language
13
REPLIES
36.1K
VIEWS

How to rationalize the denominator?

QUESTION FROM: Bill Blair | 3 months ago BY: Michael Rogers
Algebra
13
REPLIES
1.1K
VIEWS

how to get exact solutions (error free solution)

QUESTION FROM: abhishek sharma | 11 years ago BY: John Doty
Algebra , Equation Solving , Mathematica
14
REPLIES
13.5K
VIEWS

Solve an non-homogeneous system of equations mod Z (integers)

QUESTION FROM: Hongyi Zhao | 2 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematics , Wolfram Language
29
REPLIES
9.6K
VIEWS

Solving system of Nonlinear algebraic equations (quickly)

QUESTION FROM: Kashif Nazar | 6 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Wolfram Language
16
REPLIES
40.8K
VIEWS

Use InterpolatingPolynomial with a lot of data?

QUESTION FROM: Jaime de la Mota | 7 years ago BY: Jaime de la Mota
Algebra , Control Systems , Data Science , Engineering , ...
19
REPLIES
10.4K
VIEWS

Test for the position of the first non-numeric value?

QUESTION FROM: Eduardo Mendes | 10 years ago BY: Eduardo Mendes
Algebra , Mathematics , Wolfram Language
16
REPLIES
8.4K
VIEWS

How do I create a matrix that has a function as its values?

QUESTION FROM: Andrew Meador | 11 years ago BY: Andrew Meador
Algebra , Mathematica , Wolfram Language
8
REPLIES
7.2K
VIEWS

Trying to get the matrix except the diagonal elements

QUESTION FROM: Woo Young Kang | 12 years ago BY: Woo Young Kang
Algebra , Mathematica
10
REPLIES
9.9K
VIEWS

How to prove the equality of two functions?

QUESTION FROM: Sasha Mandra | 2 years ago BY: Sasha Mandra
Algebra , Mathematics , Wolfram Language
11
REPLIES
4.3K
VIEWS

Solving an equation that involves truncated series

QUESTION FROM: Davide Alfano | 4 years ago BY: Davide Alfano
Algebra , Equation Solving , Mathematics , Wolfram Language
9
REPLIES
3.6K
VIEWS

Take real or complex entries of eigensystem or separate them as a whole

QUESTION FROM: Hongyi Zhao | 4 years ago BY: Hongyi Zhao
Algebra , Wolfram Language
33
REPLIES
6.1K
VIEWS

Math one-liners from YouTube

QUESTION FROM: Raspi Rascal | 5 years ago BY: Marvin Ray Burns A.G.S. (cum laude)
Algebra , Equation Solving , Events & Media , Mathematics , ...
8
REPLIES
15.3K
VIEWS

[?] Calculate and interpret Lim (x->0) ln(x!)/x ?

QUESTION FROM: Lucas Campos | 7 years ago BY: Daniel Lichtblau
Algebra , Calculus , Graphics and Visualization , Mathematics , ...
4
REPLIES
10.2K
VIEWS

[?] Pick columns or rows of a matrix?

QUESTION FROM: Pierre Dehez | 8 years ago BY: Michael Rogers
Algebra , Mathematics , Wolfram Language
9
REPLIES
8K
VIEWS

trascendental equations in Mathematica

QUESTION FROM: Luca D. | 11 years ago BY: Jim Baldwin
Algebra , Equation Solving , Wolfram Language
22
REPLIES
10K
VIEWS

Basics crash mathematica

QUESTION FROM: Thomas Dobroth | 11 years ago BY: Bruce Miller
Algebra , Wolfram Language
6
REPLIES
11.1K
VIEWS

Predator Prey Plot over time

QUESTION FROM: Mitchell Sandlin | 2 months ago BY: Eric Rimbey
Algebra , Graphics and Visualization , Mathematics , Modeling , ...
13
REPLIES
398
VIEWS

DSolve v.s. copilot for Coulomb damping

QUESTION FROM: Isao Maruyama | 2 months ago BY: Michael Rogers
Algebra , Calculus , Equation Solving , Mathematics , Wolfram Language
3
REPLIES
292
VIEWS

Trouble with scaling options in VectorPlot and StreamPlot

QUESTION FROM: Jay Gourley | 3 months ago BY: Gianluca Gorni
Algebra , Graphics and Visualization , Physics
10
REPLIES
647
VIEWS

Jacobian matrix of two functions

QUESTION FROM: Evan Cooch | 2 years ago BY: kaylene ginny
Algebra , Mathematics , Wolfram Language
8
REPLIES
4.5K
VIEWS

QRDecomposition outcome from two "almost identical matrices" are different

QUESTION FROM: ddtty kuso | 2 years ago BY: Daniel Lichtblau
Algebra , Mathematics , Wolfram Language
3
REPLIES
2.8K
VIEWS

NDSolve error: step size is effectively zero

QUESTION FROM: Lance Randall Gamier | 5 years ago BY: Lance Randall Gamier
Algebra , Equation Solving , Graphics and Visualization , ...
6
REPLIES
8.5K
VIEWS

Fixed points of coupled NLD involving transcendental functions

QUESTION FROM: vijay arjun | 5 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
12
REPLIES
6.5K
VIEWS

Implementing Lanczos algorithm in Mathematica

QUESTION FROM: Feras Moh | 5 years ago BY: Feras Moh
Algebra , Mathematica , Mathematics , Wolfram Language
4
REPLIES
8.5K
VIEWS

How to get the result of a multiplication between a matrix and a vector?

QUESTION FROM: Alberto de la Torre | 6 years ago BY: Christopher Young
Algebra , Control Systems , Engineering , Mathematica , Mathematics , ...
8
REPLIES
88.2K
VIEWS

Get the original sequence in W|A with "inverse fft of fft of {0,1,2,3}"?

QUESTION FROM: Nikolay Tsenkov | 9 years ago BY: Nikolay Tsenkov
Algebra , Mathematics , Signal Processing , Wolfram|Alpha , ...
10
REPLIES
14.2K
VIEWS

Generate number combinations using KnapsackSolve[] function?

QUESTION FROM: Manjunath Babu | 9 years ago BY: Daniel Lichtblau
Algebra , Mathematics , Wolfram Language
9
REPLIES
12.9K
VIEWS

Calculate the product of two radicals?

QUESTION FROM: Valeriu Ungureanu | 10 years ago BY: Valeriu Ungureanu
Algebra , Mathematics , Symbolic Computations , Wolfram Language
12
REPLIES
6.9K
VIEWS

Evaluate [omega(1) .. omega(10000)] in Wolfram|Alpha within few seconds?

QUESTION FROM: Cornelis van der Bent | 10 years ago BY: Bill Simpson
Algebra , Mathematics , Wolfram|Alpha , Wolfram Language
8
REPLIES
7.5K
VIEWS

DSolve simply freezing with yellow bar bracket

QUESTION FROM: Dev G | 12 years ago BY: Bill Simpson
Algebra , Calculus , Equation Solving , Mathematica , Wolfram Language
8
REPLIES
5.3K
VIEWS

Simplification/change of representation of formulas

QUESTION FROM: Ulrich Müller | 13 years ago BY: Todd Rowland
Algebra , Equation Solving , Mathematica , Mathematics
4
REPLIES
6.3K
VIEWS

What is the reason of insufficient memory error while using FindRoot?

QUESTION FROM: Leslaw Bieniasz | 2 years ago BY: Hans Milton
Algebra , Equation Solving , Mathematics , Numerical Computation , ...
8
REPLIES
2.6K
VIEWS

MatrixSymbol simplifications

QUESTION FROM: Eric Michielssen | 2 years ago BY: Jose Martin-Garcia
Algebra , Mathematics , Symbolic Computations , Wolfram Language
6
REPLIES
3.4K
VIEWS

Solving nonlinear equation with integrals and beta functions

QUESTION FROM: Muhammad Fahem Bin Musa | 2 years ago BY: Bill Nelson
Algebra , Calculus , Equation Solving , Mathematics , ...
6
REPLIES
2.4K
VIEWS

Determine solution of an underdetermined linear equation system

QUESTION FROM: Nina Teller | 3 years ago BY: Mariusz Iwaniuk
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
5
REPLIES
4.7K
VIEWS

Solve doesn't like roots

QUESTION FROM: Frank Kampas | 4 years ago BY: Zhenyu Zeng
Algebra , Equation Solving , Mathematics , Tuning and Debugging , ...
20
REPLIES
7.3K
VIEWS

No solution for solving equation in W|A?

QUESTION FROM: R R | 6 years ago BY: Gianluca Gorni
Algebra , Equation Solving , Wolfram|Alpha , Wolfram Language
9
REPLIES
8.8K
VIEWS

Matrix operation speed: Mathematica vs Matlab?

QUESTION FROM: Erdem Uguz | 10 years ago BY: Erdem Uguz
Algebra , External Programs and Systems , Mathematica , ...
3
REPLIES
11.9K
VIEWS

How to plot the graph of the equation F[x,y]=0 ?

QUESTION FROM: Artem Strashko | 11 years ago BY: Daniel Lichtblau
Algebra , Graphics and Visualization , Mathematica , Wolfram Language
20
REPLIES
39.5K
VIEWS

Reducing cubics

QUESTION FROM: Bruce Torrence | 13 years ago BY: Bruce Torrence
Algebra , Equation Solving , Mathematica , Mathematics
3
REPLIES
9.3K
VIEWS

Advice on Wolfram Products for my website

QUESTION FROM: sihle mgobozi | 13 years ago BY: sihle mgobozi
Algebra , Calculus , Chemistry , Demonstrations , Mathematics , ...
3
REPLIES
19K
VIEWS

Condensing the last line of monotonicity-check code

QUESTION FROM: Bill Blair | 3 months ago BY: Bill Blair
Algebra , Equation Solving , Wolfram Language
5
REPLIES
599
VIEWS

Geodesics equation - solving and plotting via Mathematica

QUESTION FROM: michal buday | 6 months ago BY: Marty Parts
Algebra , Calculus , Equation Solving , Geometry , ...
6
REPLIES
24.3K
VIEWS

Solve function yields empty set answer

QUESTION FROM: Jay Schultz | 7 months ago BY: Hekarl Uzir
Algebra , Equation Solving , Mathematics , Wolfram Language
7
REPLIES
2.4K
VIEWS

Square root of the square of a complex number

QUESTION FROM: Sasha Mandra | 0 months ago BY: Michael Rogers
Algebra , Mathematics , Symbolic Computations , Wolfram Language
8
REPLIES
1.9K
VIEWS

Unexpected behavior of DistanceMatrix?

QUESTION FROM: Massimiliano Pavan | 4 years ago BY: Sander Huisman
Algebra , Geometry , Mathematics , Wolfram Language
13
REPLIES
6.2K
VIEWS

Transcendental equation cannot be solved?

QUESTION FROM: Zhenyu Zeng | 4 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
10
REPLIES
7.2K
VIEWS

How can Wolfram|Alpha get all 5 solutions?

QUESTION FROM: Sergey Berezin | 4 years ago BY: Sergey Berezin
Algebra , Equation Solving , Mathematics , Wolfram|Alpha
22
REPLIES
11.5K
VIEWS

Why doesn't FixedPointList[ ] work when starting with integer?

QUESTION FROM: Zhenyu Zeng | 4 years ago BY: Hans Milton
Algebra , Calculus , Equation Solving , Numerical Computation , ...
10
REPLIES
5.2K
VIEWS

Solve[ ] gives an empty output?

QUESTION FROM: Umut Cemre Can | 5 years ago BY: Umut Cemre Can
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
6
REPLIES
5.5K
VIEWS

Solving equation system with quadratic terms

QUESTION FROM: Maximilian Ulbrich | 6 years ago BY: Maximilian Ulbrich
Algebra , Equation Solving , Mathematics , Wolfram Language
16
REPLIES
9K
VIEWS

How to specify expressions and assumptions that contain summations?

QUESTION FROM: Richard Frost | 6 years ago BY: Richard Frost
Algebra , Mathematics , Symbolic Computations , Wolfram Language
8
REPLIES
5.3K
VIEWS

Simplify the mathematical expression in any desired form?

QUESTION FROM: Isa Comez | 7 years ago BY: Isa Comez
Algebra , Calculus , Mathematics , Symbolic Computations , ...
5
REPLIES
6K
VIEWS

Basis of factors for large degree polynomials

QUESTION FROM: Ed Pegg | 9 years ago BY: EDITORIAL BOARD
Staff Picks , Algebra , Graphics and Visualization , Group Theory , ...
2
REPLIES
18.3K
VIEWS

[SOLVED] Solve for Iterative Variable, 'What If --> 'Goal Seek' in Excel

QUESTION FROM: Greg | 10 years ago BY: Supratim Das Gupta
Algebra , Mathematica , Wolfram Language
4
REPLIES
12.7K
VIEWS

Elementary CA models from a different method ?

QUESTION FROM: Tylor Firestone | 11 years ago BY: Tylor Firestone
Algebra , Computational Systems , Computer Science , ...
3
REPLIES
14.3K
VIEWS

Solve or NSolve doesn't give any solution in twelve hours

QUESTION FROM: bilik.miloslav | 12 years ago BY: bilik.miloslav
Algebra , Equation Solving , Mathematica , Wolfram Language
3
REPLIES
8.5K
VIEWS

Solving a system of kinetic equations in the steady state

QUESTION FROM: Josh Wofford | 12 years ago BY: Josh Wofford
Algebra , Calculus , Chemistry , Equation Solving , Mathematica , ...
11
REPLIES
13.6K
VIEWS

Common set of eigenvectors for commutative matrices

QUESTION FROM: Vahagn Abgaryan | 12 years ago BY: Vahagn Abgaryan
Algebra , Mathematica
9
REPLIES
18.5K
VIEWS

Is this system of equations unsolvable?

QUESTION FROM: Wang Jiapeng | 8 days ago BY: Michael Rogers
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
5
REPLIES
132
VIEWS

How the left-hand side of the equation be transformed into the right-hand side?

QUESTION FROM: Bill Blair | 3 months ago BY: Michael Rogers
Algebra
4
REPLIES
444
VIEWS

Other ways shift the terms containing x₀² and y₀² from the left-hand side of the equation

QUESTION FROM: Bill Blair | 3 months ago BY: Michael Rogers
Algebra , Symbolic Computations
3
REPLIES
513
VIEWS

Getting access to all the roots by Solve

QUESTION FROM: Malcolm Slaney | 5 months ago BY: Malcolm Slaney
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
9
REPLIES
1.2K
VIEWS

Finding a minimum value of a variable that makes an inequality true

QUESTION FROM: Izzy Glanville | 2 years ago BY: Izzy Glanville
Algebra , Equation Solving , Optimization , Mathematics , ...
4
REPLIES
2.9K
VIEWS

Infinite expression 1/0 encountered when evaluating a non-singular polynomial

QUESTION FROM: Mathias Gschwendtner | 3 years ago BY: Mathias Gschwendtner
Algebra , Mathematics , Wolfram Language
6
REPLIES
4.7K
VIEWS

Solve::nsmet: This system cannot be solved

QUESTION FROM: Fabián Quiñones | 3 years ago BY: Fabián Quiñones
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
4
REPLIES
3.9K
VIEWS

An issue of Limit with Bessel function

QUESTION FROM: Aki Hiro | 3 years ago BY: Daniel Lichtblau
Algebra , Graphics and Visualization , Mathematics , Wolfram Language
2
REPLIES
3.5K
VIEWS

Calculate the Rational Canonical Form of a square matrix

QUESTION FROM: Hongyi Zhao | 4 years ago BY: Hongyi Zhao
Algebra , Mathematics , Wolfram Language
7
REPLIES
7.9K
VIEWS

Discovering symbolic square roots?

QUESTION FROM: Yaroslav Bulatov | 4 years ago BY: Yaroslav Bulatov
Algebra , Mathematica , Wolfram Language
2
REPLIES
6.8K
VIEWS

Unexpected result from Simplify?

QUESTION FROM: Waulu S | 4 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
4
REPLIES
4.1K
VIEWS

Find all roots to an equation?

QUESTION FROM: Jhn Doe | 4 years ago BY: Igor Kotelnikov
Algebra , Equation Solving , Graphics and Visualization , ...
8
REPLIES
19.1K
VIEWS

Find these Transcendental equation's solution?

QUESTION FROM: Muhammad Afzal | 5 years ago BY: Sunanda Lakkimsetti
Algebra , Equation Solving , Mathematics , Numerical Computation , ...
19
REPLIES
12.7K
VIEWS

Does a Multisets[] function exist?

QUESTION FROM: Raspi Rascal | 6 years ago BY: Richard Frost
Algebra , Discrete Mathematics , Statistics and Probability , ...
6
REPLIES
9.6K
VIEWS

Finding the function given the gradient vector

QUESTION FROM: Meryem Aslı | 6 years ago BY: Meryem Aslı
Algebra , Calculus , Equation Solving , Geometry , ...
18
REPLIES
19.9K
VIEWS

Find a missing number in a sequence of numbers.

QUESTION FROM: Artin Hatzikioseyian | 6 years ago BY: Jim Baldwin
Algebra , Calculus , Mathematics , Wolfram Language
9
REPLIES
9.5K
VIEWS

Why N is not affecting the rest of Power, but not NHoldRest is set?

QUESTION FROM: Martin Guttmann | 7 years ago BY: Sander Huisman
Algebra , Mathematics , Numerical Computation , Wolfram Language
2
REPLIES
8K
VIEWS

Why does FullSimplify not recognize this function evaluates to zero?

QUESTION FROM: Philip Blanco | 9 years ago BY: Michael Rogers
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
7
REPLIES
19.1K
VIEWS

[?] Area under the curve of a Parametric Plot function?

QUESTION FROM: Anonymous User | 9 years ago BY: Claude Mante
Algebra , Graphics and Visualization , Mathematics , ...
5
REPLIES
11.1K
VIEWS

[?] Generate all sequences of n integer that range from 1 to n?

QUESTION FROM: Clément Justin | 9 years ago BY: Henrik Schachner
Algebra , Discrete Mathematics , Mathematics , Wolfram Language
8
REPLIES
9.3K
VIEWS

CentralMoment[2] vs. Variance using WeightedData

QUESTION FROM: Sander Huisman | 9 years ago BY: Sander Huisman
Algebra , Mathematica , Mathematics , Statistics and Probability , ...
5
REPLIES
8.4K
VIEWS

Wolfram Language equivalent to Matlab Rot90?

QUESTION FROM: Paul Davidson | 10 years ago BY: Sander Huisman
Algebra , External Programs and Systems , Mathematics , ...
6
REPLIES
9.9K
VIEWS

What is the default rule of Integration for Mathematica?

QUESTION FROM: Thai Kee Gan | 11 years ago BY: Thai Kee Gan
Algebra , Calculus , Mathematica , Numerical Computation , ...
10
REPLIES
12.4K
VIEWS

How to improve the choice for the starting point in NSolve and FindRoot??

QUESTION FROM: Daniel Branco | 11 years ago BY: Daniel Lichtblau
Algebra , Mathematica
5
REPLIES
8.4K
VIEWS

Orthogonal projection of surface

QUESTION FROM: Victoria Cheng | 11 years ago BY: Victoria Cheng
Algebra , Calculus , Geometry , Graphics and Visualization , ...
3
REPLIES
11.2K
VIEWS

Problem for diagonalisation of a complex 6*6 matrix

QUESTION FROM: Jonathan Da Silva | 11 years ago BY: Michael Helmle
Algebra , Mathematica , Numerical Computation , Wolfram Language
7
REPLIES
12.3K
VIEWS

Multivariable system of equations

QUESTION FROM: Jacob Simon | 11 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematica , Wolfram Language
4
REPLIES
11.4K
VIEWS

How to find all multi-indices satisfying given contraints?

QUESTION FROM: Jonatan Lehtonen | 12 years ago BY: Jonatan Lehtonen
Algebra , Mathematica , Numerical Computation , Wolfram Language
10
REPLIES
9.4K
VIEWS

Inconsistent calculations when simplifying two equal terms

QUESTION FROM: John Kubala | 4 days ago BY: Daniel Lichtblau
Algebra , Mathematics , Wolfram Language
4
REPLIES
92
VIEWS

Algebraic verification: from separated quadratic form to coupled bilinear form

QUESTION FROM: Bill Blair | 3 months ago BY: Michael Rogers
Algebra , Mathematics , Symbolic Computations
8
REPLIES
513
VIEWS

How to calculate the 100th term of this recurrence relation?

QUESTION FROM: Bill Blair | 4 months ago BY: Gianluca Gorni
Algebra , Mathematics , Wolfram Language
2
REPLIES
615
VIEWS

How to remove the "if" part following the calculation result obtained from Solve?

QUESTION FROM: Wen Dao | 5 months ago BY: Michael Rogers
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
3
REPLIES
922
VIEWS

Mathematica 14.2 is not performing matrix multiplication on 3 times 3 matrices.

QUESTION FROM: P. Marrone | 1 year ago BY: Hans Milton
Algebra , Mathematics , Wolfram Language
8
REPLIES
3K
VIEWS
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