Billy


Active since 2011

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Can you turn off all simplifications?
I need to do some basic algebra and want to use MuPad as a "check my work" tool. However I can't turn off all simplifications! ...

ungefär 12 år ago | 2 answers | 0

2

answers

Question


Plot different types of plots on same graph
Assume I've defined f2 := (x,y) -> x*exp(y) + cos( x*y ) and gf2 := gradient( f2(x,y), [x,y] ) I'd like to plot ...

ungefär 12 år ago | 1 answer | 0

1

answer

Answered
Can you plot level curves in Mupad?
Yes, but you must use Implicit2d. For example, say you have the function of 2 variables f := (x,y)->x^2 + 4*y^2 The l...

ungefär 12 år ago | 0

| accepted

Question


Can you plot level curves in Mupad?
If you have a vector field in MATLAB, you can easily plot the level curves via `contour` and the vector field via `quiver`. h...

ungefär 12 år ago | 1 answer | 2

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answer

Question


Mupad Error: cannot create output file [vcam::new]
The command, and it's result: plot( x, x=0..5, OutputFile="C:/test2000.jpg" ) Error: cannot create output file [vcam::ne...

ungefär 12 år ago | 0 answers | 0

0

answers

Answered
How do I specify m for orthpoly::legendre ?
In fact a better way to do this: Define Legendre polynomials: P := (n) -> 1/(2^n * n!) * diff( (x^2-1)^n, x $ n ) ...

ungefär 12 år ago | 0

Answered
Generate explicit formula for mth derivative
You can't.

ungefär 12 år ago | 0

| accepted

Question


Generate explicit formula for mth derivative
I'd like to generate an explicit formula for the mth derivative of x^n, for example: diff( x^n, x $ m ) The result in Mu...

ungefär 12 år ago | 2 answers | 0

2

answers

Question


MuPad plot::setDefault( plot::Scaling=Constrained )
I'd like to change the default behavior of plot:: to use Constrained scaling. However this fails: plot::setDefault( plot...

ungefär 13 år ago | 1 answer | 0

1

answer

Question


Is there a reason MuPad doesn't find the obvious cancellation?
I have: f := 1/2* sqrt( 16-x^2 ) df := diff( f, x ) simplify( f * sqrt( 1 + df^2 ) ) mupad doesn't find the obvio...

ungefär 13 år ago | 2 answers | 0

2

answers

Question


Why does poly() not evalp
I have an example: evalp( poly( sqrt( 1-x^2 ), [x] ), x=cos(0.5) ) This gives (sqrt(1-x^2)) as the response. The ex...

ungefär 13 år ago | 1 answer | 0

1

answer

Answered
How do I specify m for orthpoly::legendre ?
Using <http://mathworld.wolfram.com/AssociatedLegendrePolynomial.html>, you can express the associated legendre polynomials in t...

ungefär 13 år ago | 0

| accepted

Question


How do I specify m for orthpoly::legendre ?
I want to get the associated Legendre polynomials in mupad, but only the Legendre (not assoc.) are avail. <http://www.mathwor...

ungefär 13 år ago | 2 answers | 0

2

answers

Question


Can you get one side of an equation and store it in a variable?
Say I have an equation object in Mupad: eq1 := x + y = 0 Now say after some manipulation I want to drop RHS, and just save the...

ungefär 13 år ago | 1 answer | 0

1

answer

Question


Answer format for solve()
I don't like the way MuPad inserts an extra parameter in the solution to a problem I gave it: solve( { v1 + v2*t + v3*t^2 = 0...

ungefär 13 år ago | 2 answers | 0

2

answers

Answered
MuPAD Differential equation solver
2 things: * Be very careful to enter y(x) (never just plain y). * In the MuPad statement you included with your comment, you ne...

ungefär 13 år ago | 0

Question


complete the square MuPad
Does MuPad have among its factoring functions a command to complete the square?

ungefär 13 år ago | 1 answer | 0

1

answer

Question


MuPad reduce roots
I find MuPad does not reduce roots for example simplify( (z^3)^(1/3) ) to simply z as expected, instead leaving it as (z^3...

ungefär 13 år ago | 1 answer | 0

1

answer