Would someone please give me the correct syntax for finding extrema on a closed interval for

f(x) = 3x^4 - 4x^3  on the interval [-1, 2]

that would include the left & right endpoints should one of those be the maximum or minimum.

Alla

Last week I asked about manipulating a Matrix into the form:

pts := [[x1,y1],[x2,y2]...[xn,yn]]

I was directed to use the zip function, which after some trial and error I have "successfully" done. The problem I am having (I think) is that I am using Maple9. Using the zip function as in the example:

Hi,

I need to solve the heat diffusion equation in a system with two enclosed walls.  The first wall (made of a material called fr4) goes from x=0 o x=d1, and the second wall (made of copper, that is cu)from x=d1 to x=d2. 

u(x,t) is my unknown (change of temperature with time and space) for the first wall, and v(x,t) the unknown for the second wall.

So the system of PDEs to solve is:

>PDE:=[ diff(u(x,t),t) = afr4*diff(diff(u(x,t),t) ,

Hi!

I have a function in 2 variables - lets make it easy, the function is:

f(beta,c_0) = beta-6*beta*c_0+3*beta*c_0^2

I want to know in which regions this function has positive values and where it is negative. Tried it with the command contourplot, but this is not telling me anything :(.

Hope somebody can help

Thx
 

Hello,

is there any way to solve a system like (d denotes the derivates):

f₁(x₁,x₂,y₁,y₂)=0

f₂(x₁,x₂,y₁,y₂)=0

dg₁(x₁,x₂,y₁,y₂)/dy₁=0

dg₂(x₁,x₂,y₁,y₂)/dy₂=0

Hi there, could someone help me plot zeta(0.5 + it) as seen here - en.wikipedia.org/wiki/File:Zeta_polar.svg

I assume I need to import some complex plot package?

This may have an annoyingly simple answer but I cannot seem to plot the prime counting function

with(numtheory):
plot(pi(x), x=0..100);

This just gives me an empty plot.  Any ideas?

How would you graph the eight curve in Maple?

x^4 = a^2 (x^2 - y^2)

Alla

I am very, very new to Maple and I know practically nothing. I have to create a number line, which I realize I use the plot command and x-axis, but that's about all I know. As an example, my professor gave "plot([[1,0],[5,0]],color=black,thickness=5);

Is it possible to export a Maple animation as a movie that can be inserted elsewhere like a PowerPoint presentation?  I know that I can export a "still frame" from an animation but I would like to export the entire movie.   Thanks.   David

I want to call a GSL function, which writes data to a pointer to be provided
(Regular Spherical Bessel Functions, array version) it has prototype

  int gsl_sf_bessel_jl_steed_array (int lmax, double x, double * jl_x_array)

so the 'array' is a pointer and no specific length (though only lmax + 1 of
the space is used, I think).

I tried the below, but the actual call results in a crash:

  arrB_GSL := define_external(
    'gsl_sf_bessel_jl_steed_array',
   ...

f(x) = (a((ax+b)/(cx-a))+b)/(c((ax+b)/(cx-a))-a)

The homework assignment asked me to simplify this function. It turns out that I was able to simplify it all the way down to f(x) = x by hand. However, I cannot seem to get Maple to simplify it any further than the original problem. Any ideas? Thanks, Brandon

when a student or colleague attaches a .mw file to an e-mail....i have trouble opening it....when i try to i get this question "How do you want to open this text file?" with four options "Maple Text", "Plaintext," "Maple Input" and "Cancel".  it does not matter what I enter here....the worksheet appears empty.

i do not have any problem with .mws files as e-mail attachments.

pwh