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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

What syntax to display roots (like squareroot --> nth root)?

QUESTION FROM: Rick K. | 11 years ago BY: Eric Rimbey
Algebra , Calculus
3
REPLIES
67.8K
VIEWS

Keep only positive and real solutions from Solve?

QUESTION FROM: Fredrik Erling | 4 years ago BY: Phani Sanagavarapu
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
5
REPLIES
43.6K
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

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

Simplification of simple matrix expressions

QUESTION FROM: Eric Michielssen | 6 years ago BY: Eric Michielssen
Algebra , Wolfram Language
6
REPLIES
40.2K
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

Plot multiple planes at once in Wolfram|Alpha

QUESTION FROM: Jan Cieslik | 4 years ago BY: Yoonsuck Choe
Algebra , Geometry , Mathematics , Wolfram|Alpha
4
REPLIES
38.6K
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

Multiply two matrices?

QUESTION FROM: Timothy Tapio | 7 years ago BY: Timothy Tapio
Algebra , Mathematics , Wolfram Language
5
REPLIES
35.4K
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

Use a Wolfram Language equivalent to Matlab's "linspace" function?

QUESTION FROM: Ehud Behar | 5 years ago BY: Ehud Behar
Algebra , Mathematics , Wolfram Language
4
REPLIES
31.2K
VIEWS

How to separate real and imaginary parts of a large complex fraction?

QUESTION FROM: ver din | 12 years ago BY: Bill Simpson
Algebra , Mathematica , Wolfram Language
6
REPLIES
29.8K
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

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

How do I enter fractions in Wolfram Alpha ?

QUESTION FROM: Susan Bedker | 12 years ago BY: Murray Eisenberg
Algebra , User Interface , Wolfram|Alpha
4
REPLIES
24.2K
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

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

Is there a way to represent Knuth's up-arrow notation in Wolfram|Alpha?

QUESTION FROM: James Counterman | 12 years ago BY: Ilian Gachevski
Algebra , Mathematica , User Interface , Wolfram|Alpha
1
REPLIES
22.5K
VIEWS

How do I use n as an integer?

QUESTION FROM: Clemens Isert | 10 years ago BY: Clemens Isert
Algebra , Wolfram Language
2
REPLIES
21.5K
VIEWS

Solving a system of equations with inequalities

QUESTION FROM: Cédric Cavents | 10 years ago BY: Cédric Cavents
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
2
REPLIES
20.7K
VIEWS

Subscript for Latex not working

QUESTION FROM: Ankur d | 11 years ago BY: Eric Rimbey
Algebra , Computational Systems , Wolfram|Alpha
2
REPLIES
20.5K
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

Showing steps in simplification?

QUESTION FROM: Nico Adamo | 10 years ago BY: Sean Clarke
Algebra , Equation Solving , Mathematics , ...
1
REPLIES
19.9K
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

How to 3D plot a volume of revolution?

QUESTION FROM: Hifas Faiz | 12 years ago BY: Marco Thiel
Algebra , Graphics and Visualization , Mathematica , Mathematics
3
REPLIES
19.6K
VIEWS

New to Wolframalpha, need to teach with it

QUESTION FROM: Lesa Kean | 11 years ago BY: Frank Kampas
Algebra , Calculus , Education , Mathematica , Mathematics , ...
2
REPLIES
19.5K
VIEWS

3 equations with 3 unknown variables - no Show Steps in Wolfram Alpha

QUESTION FROM: ivan ivanov | 11 years ago BY: Frank Kampas
Algebra , Wolfram|Alpha
8
REPLIES
19.3K
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

How to use Wolfram Alpha Pro?? It keeps giving me wrong answers.

QUESTION FROM: Ambi J | 12 years ago BY: Ambi J
Algebra , Wolfram|Alpha
7
REPLIES
19.1K
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

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

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

How do I display an index below a variable?

QUESTION FROM: Sebastian van Wickern | 11 years ago BY: Sean Clarke
Algebra , Calculus , Equation Solving
1
REPLIES
18.8K
VIEWS

Mathematics research work, any suggestions?

QUESTION FROM: Wak Fuld | 11 years ago BY: Ulrich Mutze
Algebra , Calculus , Economics , Education , Finance , Geometry , ...
2
REPLIES
18.7K
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

Piecewise plot vertical line

QUESTION FROM: Rashmil D | 12 years ago BY: S M Blinder
Algebra , Graphics and Visualization , Mathematica
5
REPLIES
18.4K
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

Did I write this wrong? Just trying to isolate a variable, Wolfram stumped!

QUESTION FROM: Eric Shierman | 11 years ago BY: Daniel Lichtblau
Algebra , Wolfram|Alpha
1
REPLIES
18.2K
VIEWS

[?] Use Solve to get an integer solution?

QUESTION FROM: Ray Lawicki | 9 years ago BY: Ray Lawicki
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
8
REPLIES
18.1K
VIEWS

Please URGENT subscript help! (On google chrome)

QUESTION FROM: Alex Veselinovic | 12 years ago BY: Daniel Lichtblau
Algebra , Equation Solving , Mathematics , Wolfram|Alpha , ...
1
REPLIES
17.3K
VIEWS

Gaussian elimination to row echelon form, not reduced row echelon form?

QUESTION FROM: D P | 4 years ago BY: Peter Burbery
Algebra , Mathematics , Wolfram Language
7
REPLIES
16.9K
VIEWS

Adding Direction Arrows to Plots

QUESTION FROM: Allen Hammack | 13 years ago BY: Paul McGill
Algebra , Calculus , Mathematica
1
REPLIES
16.8K
VIEWS

orthogonal trajectories

QUESTION FROM: Tasneem Smadi | 11 years ago BY: Tasneem Smadi
Algebra , Mathematica , Mathematics , Wolfram|Alpha
2
REPLIES
16.7K
VIEWS

Functional programming style - readability - question ...

QUESTION FROM: Mark Tuttle | 12 years ago BY: Mark Tuttle
Algebra , Business Analytics , Computer Science , Data Science , ...
5
REPLIES
16.1K
VIEWS

How can a Boolean representation be displayed as symbolic algebra?

QUESTION FROM: Steve M | 13 years ago BY: Malte Lenz
Algebra , Engineering , Logic and Boolean Algebra , Mathematica , ...
5
REPLIES
15.9K
VIEWS

Solve[ ] behaviour in Mathematica inconsistent with Wolfram Alpha?

QUESTION FROM: Joachim Rose | 11 years ago BY: Udo Krause
Algebra , Equation Solving , Mathematica , Wolfram|Alpha , ...
1
REPLIES
15.9K
VIEWS

Define a complex number

QUESTION FROM: Ahmed Al-Ali | 12 years ago BY: Ulrich Mutze
Algebra , Calculus , Compilation , Logic and Boolean Algebra , ...
4
REPLIES
15.7K
VIEWS

Row vs column vectors?

QUESTION FROM: Frederick H Lott Jr | 4 years ago BY: Sander Huisman
Algebra , Mathematics , Wolfram Language
5
REPLIES
15.7K
VIEWS

Simplifying the Black Scholes Equation

QUESTION FROM: Martin Hadley | 14 years ago BY: Martin Hadley
Algebra , Equation Solving , Finance Platform , Mathematica
2
REPLIES
15.6K
VIEWS

How to create an augmented matrix form a system of equations in mathematica

QUESTION FROM: Dave Jeudy | 12 years ago BY: Dave Jeudy
Algebra , Education , Mathematica , Mathematics
6
REPLIES
15.5K
VIEWS

Understand normalized squared euclidean distance?

QUESTION FROM: Luca Zenesini | 9 years ago BY: Luca Zenesini
Algebra , Calculus , Geometry , Mathematics , Wolfram Language
6
REPLIES
15.4K
VIEWS

Logarithmic step sizes in Manipulate/ListPlot

QUESTION FROM: Tim Kirkpatrick | 11 years ago BY: Kuba Podkalicki
Algebra , Dynamic Interactivity , Graphics and Visualization , ...
2
REPLIES
15.4K
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

How do you find the y intercepts and where the function is undefined?

QUESTION FROM: Jen Pancaldo | 12 years ago BY: Ilian Gachevski
Algebra , Mathematica
2
REPLIES
15.3K
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

Solve equations for composite functions?

QUESTION FROM: malcolm migacz | 8 years ago BY: Neil Singer
Algebra , Equation Solving , Mathematics , Wolfram|Alpha , ...
5
REPLIES
14.9K
VIEWS

Solving system of equations gives empty output, but gives result when reduced

QUESTION FROM: Panron Ryan | 2 years ago BY: Gianluca Gorni
Algebra , Equation Solving , Mathematics , Symbolic Computations , ...
6
REPLIES
14.7K
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

How can I find the domain of (4 - x^4)^(1/4) ?

QUESTION FROM: Annaliese Radcliff | 11 years ago BY: Imran Khan
Algebra , Mathematics , Wolfram|Alpha
3
REPLIES
14.6K
VIEWS

Make solution videos with voice over using WL?

QUESTION FROM: Peter Munro | 9 years ago BY: Ron Swanson
Algebra , Audio, Sound and Music , Authoring and Publishing , ...
8
REPLIES
14.5K
VIEWS

How to generate a list from a loop?

QUESTION FROM: Greg | 11 years ago BY: Carl Verdon
Algebra , Mathematica , Mathematics , Operations Research , ...
3
REPLIES
14.5K
VIEWS

Can Wolfram|Alpha be used by elementary and middle school math students?

QUESTION FROM: Thomas Turner | 10 years ago BY: Daniel Lichtblau
Algebra , Calculus , Computer-Based Maths , Education , ...
3
REPLIES
14.4K
VIEWS

Solve::ivar: -1+5 x is not a valid variable.

QUESTION FROM: Mher Hovhannisyan | 11 years ago BY: Gianluca Gorni
Algebra , Wolfram Language
1
REPLIES
14.4K
VIEWS

How to use Reduce to find com

QUESTION FROM: Omer Tzuk | 11 years ago BY: Nasser M. Abbasi
Algebra , Calculus , Mathematica , Mathematics , Physics , ...
3
REPLIES
14.3K
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

Summations on the same expression do not give the same result?

QUESTION FROM: Zhehao Zhang | 9 years ago BY: Zhehao Zhang
Algebra , Calculus , Mathematics , Wolfram Language
4
REPLIES
14.2K
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

Force to replace the derivatives of a function with given expression?

QUESTION FROM: Clément Justin | 9 years ago BY: Gianluca Gorni
Algebra , Calculus , Mathematics , Wolfram Language
7
REPLIES
14.2K
VIEWS

Lie Groups and Lie Algebras using Wolfram Language?

QUESTION FROM: Tonde Kush | 8 years ago BY: Tonde Kush
Algebra , Group Theory , Mathematics , Packages , Physics , ...
2
REPLIES
14.2K
VIEWS

How to write equations in wolfram?

QUESTION FROM: Alon Vasago | 12 years ago BY: Tigran Aivazian
Algebra , Equation Solving , Mathematica , Optimization , ...
9
REPLIES
14.1K
VIEWS

Combine three 2D matrices into a single array via nested lists?

QUESTION FROM: Philip Anon | 6 years ago BY: Anonymous User
Algebra , Discrete Mathematics , Graphics and Visualization , ...
7
REPLIES
14.1K
VIEWS

Is there a way to give Solve "hints" ...

QUESTION FROM: Mark Tuttle | 11 years ago BY: Mark Tuttle
Algebra , Computer Science , Data Science , Discrete Mathematics , ...
4
REPLIES
14.1K
VIEWS

[?] Perform an approximation with radial basis functions?

QUESTION FROM: Peter a | 6 years ago BY: Michael Kelly
Algebra , Calculus , Discrete Mathematics , Mathematics , Physics , ...
2
REPLIES
14.1K
VIEWS

Nested calls to Total to sum over middle dimension of 2X2X2 array?

QUESTION FROM: Mark Tuttle | 9 years ago BY: Mark Tuttle
Algebra , Computer Science , Mathematica , Statistics and Probability
4
REPLIES
14K
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

Normalized Eigenvector

QUESTION FROM: sean roubion | 12 years ago BY: Ilian Gachevski
Algebra , Mathematica
1
REPLIES
13.8K
VIEWS

Simplification of expression with complex variables

QUESTION FROM: Rodion Stepanov | 13 years ago BY: Rodion Stepanov
Algebra , Calculus , Mathematica , Mathematics , Symbolic Computations
3
REPLIES
13.7K
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

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

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

Combine sum of logarithms to logarithm of a product?

QUESTION FROM: Ralph Trenkler | 6 years ago BY: Dublin Nichols
Algebra , Mathematics , Wolfram Language
2
REPLIES
13.5K
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 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

Solve Redox equation with inexact coefficients, Solve[Log10[f(x)]]?

QUESTION FROM: Jonas N. | 10 years ago BY: Jonas N.
Algebra , Chemistry , Equation Solving , Mathematics , ...
9
REPLIES
13.4K
VIEWS

Multiple labels within Manipulate?

QUESTION FROM: Kaushik Mallick | 11 years ago BY: Kaushik Mallick
Algebra , Calculus , Computable Document Format , Geometry , ...
3
REPLIES
13.4K
VIEWS

How can I plot a complex vector?

QUESTION FROM: Alessandro Achille Rossi | 10 years ago BY: Philipp Krönert
Algebra , Graphics and Visualization , Wolfram|Alpha
3
REPLIES
13.4K
VIEWS

[?] Calculate the inverse Z transform with exact precision?

QUESTION FROM: Julian Oviedo | 8 years ago BY: Daniel Lichtblau
Algebra , Calculus , Mathematics , Wolfram Language
5
REPLIES
13.3K
VIEWS

Simplify Exponential argument

QUESTION FROM: Sylvain Rousseau | 13 years ago BY: Daniel Lichtblau
Algebra , Mathematica
4
REPLIES
13.2K
VIEWS

Differential Algebraic Equation

QUESTION FROM: Shivi Sv | 11 years ago BY: Shivi Sv
Algebra , Calculus , Equation Solving , Mathematica , Wolfram Language
5
REPLIES
13.2K
VIEWS

Problem taking Real part of expression involving a variable

QUESTION FROM: John Baker | 11 years ago BY: John Baker
Algebra , Equation Solving , Mathematica , Optimization , ...
5
REPLIES
13.2K
VIEWS

No solution with "Solve"

QUESTION FROM: Christoph W | 6 years ago BY: Christoph W
Algebra , Equation Solving , Mathematics , Wolfram Language
6
REPLIES
13K
VIEWS

Is it possible to find the equations of motion with Mathematica?

QUESTION FROM: Alexsandro Mota | 12 years ago BY: David Keith
Algebra , Calculus , Equation Solving , Geometry , Group Theory , ...
4
REPLIES
12.9K
VIEWS

Plotting multiple lines and using filling on only one line

QUESTION FROM: Allen Hammack | 13 years ago BY: Arnoud Buzing
Algebra , Mathematica , Mathematics
4
REPLIES
12.9K
VIEWS

Remove imaginary numbers from the solution of a polynom of 3rd degree

QUESTION FROM: Thomas Vogler | 12 years ago BY: Frank Kampas
Algebra , Mathematica , Mathematics
5
REPLIES
12.9K
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

[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

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

Solve a Matrix-vector equation with Solve instead of LinearSolve?

QUESTION FROM: Jhn Doe | 7 years ago BY: Arnoud Buzing
Algebra , Equation Solving , Mathematics , Wolfram Language
7
REPLIES
12.6K
VIEWS

Pick out pairs of numbers in a list that add up to any number in 2nd list?

QUESTION FROM: Manjunath Babu | 9 years ago BY: Sander Huisman
Algebra , Mathematics , Wolfram Language
9
REPLIES
12.5K
VIEWS
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