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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

Invert a 2x2 matrix with 2x2 matrix elements?

QUESTION FROM: stan gianzero | 7 years ago BY: stan gianzero
Algebra , Mathematics , Wolfram Language
39
REPLIES
22.5K
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

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

Runge Kutta method for a system

QUESTION FROM: Vedat Erturk | 5 years ago BY: Hans Dolhaine
Algebra , Equation Solving , Mathematics , Wolfram Language
28
REPLIES
7.9K
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

How can i use expressions from previous results?

QUESTION FROM: olayinka oyekola | 11 years ago BY: olayinka oyekola
Algebra , Mathematica , Presentation and Notebooks , Wolfram Language
24
REPLIES
20K
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

trascendental equations in Mathematica

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

Get the Dot product of two vectors with complex components?

QUESTION FROM: David Mackay | 4 years ago BY: Hans Milton
Algebra , Mathematics , Symbolic Computations , Wolfram Language
21
REPLIES
35.2K
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

Automatically calculate equation's discriminant and Veda？

QUESTION FROM: Lee Tao | 5 years ago BY: Lee Tao
Algebra , Mathematics , Wolfram Language
20
REPLIES
7.7K
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

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

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

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

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

Eliminate produced redundant equations?

QUESTION FROM: Daniel Huber | 10 years ago BY: Daniel Huber
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
18
REPLIES
8K
VIEWS

Calculate scalar H number divided by N vector?

QUESTION FROM: Meryem Aslı | 6 years ago BY: Hans Dolhaine
Algebra , Calculus , Equation Solving , Mathematics , ...
17
REPLIES
10.4K
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

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

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

[?] Simplify the following expression until "s" is gone?

QUESTION FROM: Zhehao Zhang | 9 years ago BY: EDITORIAL BOARD
Algebra , Mathematics , Symbolic Computations , Wolfram Language
16
REPLIES
9.6K
VIEWS

Invert a function with Wolfram|Alpha?

QUESTION FROM: 12D S?n?f? | 10 years ago BY: Gianluca Gorni
Algebra , Mathematics , Wolfram|Alpha
16
REPLIES
15K
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

Why does the memory used keep going up and no output is given?

QUESTION FROM: Iuval Clejan | 2 years ago BY: Iuval Clejan
Algebra , Equation Solving , Mathematics , Tuning and Debugging , ...
15
REPLIES
4.7K
VIEWS

Issue with numerical evaluation of eigenvalues

QUESTION FROM: Muhammad Zubair | 3 years ago BY: Rohit Namjoshi
Algebra , Graphics and Visualization , Mathematics , Physics , ...
15
REPLIES
4.9K
VIEWS

Solve error: not a valid variable

QUESTION FROM: J E | 4 years ago BY: J E
Algebra , Equation Solving , Mathematics , Wolfram Language
15
REPLIES
9.3K
VIEWS

HermitianMatrixQ doesn't work for a symbolic matrix

QUESTION FROM: Hongyi Zhao | 4 years ago BY: Hongyi Zhao
Algebra , Mathematics , Wolfram Language
15
REPLIES
4.9K
VIEWS

FindRoot error: function value is not a list of numbers

QUESTION FROM: Alan White | 3 years ago BY: Alan White
Algebra , Equation Solving , Mathematics , Numerical Computation , ...
14
REPLIES
6K
VIEWS

Error: "Solve was unable to solve the system" after using Rationalize

QUESTION FROM: Zhenyu Zeng | 4 years ago BY: Zhenyu Zeng
Algebra , Equation Solving , Mathematics , Wolfram Language
14
REPLIES
4.8K
VIEWS

Force Solve[ ] to obtain real expressions?

QUESTION FROM: Leslaw Bieniasz | 5 years ago BY: Hans Milton
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
14
REPLIES
6.8K
VIEWS

Remove elements of a matrix from a larger one?

QUESTION FROM: Amirhosein Hsa | 6 years ago BY: Hans Dolhaine
Algebra , Wolfram Language
14
REPLIES
4.9K
VIEWS

A problem in FunctionDomain?

QUESTION FROM: Daqing Li | 6 years ago BY: Daniel Lichtblau
Algebra , Mathematics , Wolfram Language
14
REPLIES
11.3K
VIEWS

Speed up large matrix multiplications with or without high precision?

QUESTION FROM: Erdem Uguz | 10 years ago BY: Sander Huisman
Algebra , Optimization , Mathematics , Wolfram Language
14
REPLIES
10.2K
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

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

How to rationalize the denominator?

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

A function accepts multiple matrices arguments

QUESTION FROM: Hongyi Zhao | 4 years ago BY: Eric Rimbey
Algebra , Mathematics , Wolfram Language
13
REPLIES
4.4K
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

Finding the similarity transformation between two matrices

QUESTION FROM: Hongyi Zhao | 4 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Group Theory , Mathematics , ...
13
REPLIES
7.6K
VIEWS

NSolve works with not a valid variable or gives no solution

QUESTION FROM: Luis Felipe Massena Misiec | 5 years ago BY: Luis Felipe Massena Misiec
Algebra , Equation Solving , Mathematics , Numerical Computation , ...
13
REPLIES
5.8K
VIEWS

NSolve takes too long to solve equation?

QUESTION FROM: Sabrina Chui | 5 years ago BY: Sabrina Chui
Algebra , Calculus , Equation Solving , Mathematics , ...
13
REPLIES
6.8K
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

Solve a large system of equations with 19 variables?

QUESTION FROM: Paul Cleary | 8 years ago BY: Paul Cleary
Algebra , Equation Solving , Mathematics , Wolfram Language
13
REPLIES
11.4K
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

Solving equation with Bessel functions BesselJ & BesselK

QUESTION FROM: Saf Al | 12 years ago BY: Bill Simpson
Algebra , Equation Solving , Mathematica , Wolfram Language
13
REPLIES
13.6K
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

Solving symbolically a system of 3 (complicated) equations

QUESTION FROM: Olimpia Cutinelli Rendina | 5 years ago BY: Gianluca Gorni
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
12
REPLIES
6.5K
VIEWS

Calculating determinants for various values of n?

QUESTION FROM: Ser Man | 5 years ago BY: Hans Dolhaine
Algebra , Mathematics , Wolfram Language
12
REPLIES
6.1K
VIEWS

Solving system of equations with Solve takes too long?

QUESTION FROM: Olimpia Cutinelli Rendina | 5 years ago BY: Werner Geiger
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
12
REPLIES
8.5K
VIEWS

Solve a system of non-linear equations?

QUESTION FROM: Mohammad Ahmad Shoeb | 5 years ago BY: Mohammad Ahmad Shoeb
Algebra , Equation Solving , Mathematics , Wolfram Language
12
REPLIES
8.5K
VIEWS

Calculate a hessian matrix?

QUESTION FROM: jack gredart | 9 years ago BY: Chad Knutson
Algebra , Calculus , Mathematics , Symbolic Computations , ...
12
REPLIES
13.7K
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

Why does Sqrt[] only return positive values rather than +/-?

QUESTION FROM: Michael Gmirkin | 10 years ago BY: Eric Johnstone
Algebra , Mathematica , Mathematics , Wolfram Language
12
REPLIES
22.6K
VIEWS

Calculations with Hermite Polynomials

QUESTION FROM: alan barnett | 11 years ago BY: Daniel Lichtblau
Algebra , Calculus , Mathematica
12
REPLIES
9.4K
VIEWS

Solving polynomial with matrix coefficients

QUESTION FROM: Paul Ryan | 12 years ago BY: Paul Ryan
Algebra , Mathematica , Wolfram Language
12
REPLIES
7.7K
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

Plotting solutions to an equation for varying parameter value produces empty graphs

QUESTION FROM: Ian P | 3 years ago BY: Gianluca Gorni
Algebra , Equation Solving , Graphics and Visualization , ...
11
REPLIES
4.2K
VIEWS

Point rotation in Quaternion?

QUESTION FROM: A Kim | 4 years ago BY: A Kim
Algebra , Graphics and Visualization , Mathematics , Wolfram Language
11
REPLIES
4.6K
VIEWS

Error Derivative::novar in PDEs?

QUESTION FROM: Saleh Baradaran | 5 years ago BY: Saleh Baradaran
Algebra , Calculus , Equation Solving , Mathematics , Wolfram Language
11
REPLIES
4.7K
VIEWS

Solving a system of nonlinear equations with inequality constraints

QUESTION FROM: Sabrina Chui | 5 years ago BY: Bill Nelson
Algebra , Equation Solving , Mathematics , Wolfram Language
11
REPLIES
7.2K
VIEWS

Angle variable "escaped" from DynamicModule?

QUESTION FROM: Christopher Young | 6 years ago BY: Christopher Young
Algebra , Dynamic Interactivity , Geometry , ...
11
REPLIES
8.8K
VIEWS

Probability distribution of two numbers randomly changing?

QUESTION FROM: Ulrich Utiger | 9 years ago BY: Ulrich Utiger
Algebra , Calculus , Mathematics , Statistics and Probability , ...
11
REPLIES
12.3K
VIEWS

Solve a system of 8 equations with 8 variables using NSolve?

QUESTION FROM: Josh Wofford | 9 years ago BY: Valeriu Ungureanu
Algebra , Equation Solving , Mathematics , Numerical Computation , ...
11
REPLIES
10.5K
VIEWS

Expand polynomial

QUESTION FROM: Alan Smith | 11 years ago BY: Alan Smith
Algebra
11
REPLIES
8.3K
VIEWS

how to diagonolize this matrix?

QUESTION FROM: Kouhei Mori | 12 years ago BY: Kouhei Mori
Algebra , Wolfram Language
11
REPLIES
10.1K
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

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

Forcing Solve to give real-valued root

QUESTION FROM: Paul R | 2 years ago BY: Michael Rogers
Algebra , Mathematics , Symbolic Computations , Wolfram Language
10
REPLIES
2.4K
VIEWS

How to define and evaluate the so-called 'Hadamard Product' with symbolic arrays?

QUESTION FROM: Alberto Silva Ariano | 2 years ago BY: Michael Rogers
Algebra , Mathematics , Wolfram Language
10
REPLIES
4.3K
VIEWS

Find the n-th root of Unity based decomposition of a expression from scratch.

QUESTION FROM: Hongyi Zhao | 3 years ago BY: Hongyi Zhao
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
10
REPLIES
3K
VIEWS

How to Solve two equations simultaneously?

QUESTION FROM: jason nguyen | 4 years ago BY: Rohit Namjoshi
Algebra , Equation Solving , Mathematics , Wolfram Language
10
REPLIES
3.7K
VIEWS

Create the abstract group (or space group) using relators (or generators).

QUESTION FROM: Hongyi Zhao | 4 years ago BY: Hongyi Zhao
Algebra , Group Theory , Mathematics , Wolfram Language
10
REPLIES
7K
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

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

Finding piecewise function based on set of points?

QUESTION FROM: Jose Hernandez | 6 years ago BY: Jose Hernandez
Algebra , Graphics and Visualization , Mathematics , Wolfram Language
10
REPLIES
9.3K
VIEWS

Solving equation by radical expression

QUESTION FROM: Gianluca Gorni | 6 years ago BY: RACHIDA MOUNIRA
Algebra , Equation Solving , Symbolic Computations , Wolfram Language
10
REPLIES
6.8K
VIEWS

Elementary Row Operations in Wolfram|Alpha

QUESTION FROM: Betty Love | 6 years ago BY: Frank Lobue
Algebra , Mathematics , Wolfram|Alpha
10
REPLIES
25.4K
VIEWS

Solve mixed power and exponential algebraic equation?

QUESTION FROM: max ron | 9 years ago BY: Marco Thiel
Algebra , Equation Solving , Mathematics , Wolfram|Alpha , ...
10
REPLIES
13.5K
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

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

Avoid RowReduce Error with swapped variable names?

QUESTION FROM: Dominik Luz | 9 years ago BY: Michael Rogers
Algebra , Equation Solving , Geometry , Mathematics , ...
10
REPLIES
10.5K
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 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

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

Is there any loop alternative to using If[], Which[] or Piecewise[] ?

QUESTION FROM: Leslaw Bieniasz | 3 months ago BY: Eric Rimbey
Algebra , Wolfram Language
9
REPLIES
848
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

How do I plot complex parameters with one real variable?

QUESTION FROM: Nikita Averin | 2 years ago BY: Nikita Averin
Algebra , Graphics and Visualization , Mathematics , Wolfram Language
9
REPLIES
2K
VIEWS

Solve error: not quantified system

QUESTION FROM: Cornel B. | 3 years ago BY: Cornel B.
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
9
REPLIES
4.1K
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

HankelH1 real part for large values of n differs from Python result

QUESTION FROM: D D | 5 years ago BY: D D
Algebra , Astronomy , Computer Science , Data Science , Economics , ...
9
REPLIES
7.9K
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

Calculate the value of a Determinant

QUESTION FROM: Power Conquer Li | 6 years ago BY: Hans Dolhaine
Algebra , Mathematics , Wolfram Language
9
REPLIES
8K
VIEWS

Regarding units of output value

QUESTION FROM: abhishek sharma | 6 years ago BY: abhishek sharma
Algebra , Calculus , Mathematica , Optimization , Mathematics , ...
9
REPLIES
8.7K
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

Step-by-step solution doesn't address two solutions given by Reduce command

QUESTION FROM: Michael Meagher | 7 years ago BY: Michael Meagher
Algebra , Equation Solving , Mathematics , Wolfram|Alpha , ...
9
REPLIES
10.7K
VIEWS

Result of Equal with multiple arguments

QUESTION FROM: Martin Guttmann | 7 years ago BY: Szabolcs Horvát
Algebra , Mathematica , Mathematics , ...
9
REPLIES
10.8K
VIEWS

Orthogonal Projection of vector onto plane

QUESTION FROM: Jhn Doe | 7 years ago BY: Jhn Doe
Algebra , Graphics and Visualization , Mathematics , Wolfram Language
9
REPLIES
12.2K
VIEWS

What is the implicit and/or parametric equations for hyperbolic shapes?

QUESTION FROM: Ibrahim Mahmoud | 8 years ago BY: Ibrahim Mahmoud
Algebra , Geometry , Mathematics , Symbolic Computations , ...
9
REPLIES
7.6K
VIEWS
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