I define a procedure function like this

f:=proc if 0<=x<1 then 1 else 0 fi; end proc

but when i want to integral it

int(f(x),x=0..2)

maple gave me the information like this

Error, (in g) cannot determine if this expression is true or false: 0 <= x and x < 1

I want to know why? and I know use piecewise function can solve this. but  I think is there any other method to solve it?

Hi, I am currently enrolled in a class which uses Maple 12.  I have looked through all the FAQ and Help topics by using their search functions.  I still not have the command to find the Domain and Range of a function.  Advance thanks for any help which is appreciated

Hello,

I need to export animation as a gif picture with different speed of animation.

I use plotsetup(gif,  ... but I do not know how I could do it.
 

Please help me.

Thanks

Vladimir

Hello Folks ! I'm running Maple 11 on Mac OS X Leopard (latest version 10.5.6). I've found what I think is a bug in Maple: when doing operations on large polynomials, like multiplication or factorization, the result is correct, but some ghost exponents show up on fractions or even plus/minus symbols. In the file I've attached you will see this in the last two results, in which a 4 exponent shows up over the 1/8 and +/- signs or even over some parenthesis. Maple doesn't seem to get confused wi

Hi,

I'm trying to extract some coefficients from a symbolic determinant but it's not working. I tried every option presented on Maple help but couldn't get it to work:

1. How set these varibles and unknowns ?

for example

q := {l2s = n+l2[0], ds = k+d[0], l1s = m+l1[0], m+n = k}

I just want know the ds expressed with the varibles: d[0], l1[0],l1s,l2[0],l2s

How ?

solve(q, {k, ds}) and solve(q,{ds})

doesn't work.

 

2. Another question. If I get the result sets {a=..., b=... }, how can I get the expression of a or b. As we know, the sequence of the a and b in the set is not allways the same way. It may be {b=..., a=...}

graph the vector field F and the curve C to guess whether the line integral of F over C is positive or negative or zero. then evaluate the line integral F(x,y) = (x/sqrt(x^2+y^2)i + (y/sqrt(x^2+y^2)j C is the parabola y =1 +x^2 from (-1,2) to (1,2)

plot the gradient vector field and the contour map of f f(x,y) = sinx + siny

can anyone help me to plot that vector field of F(x,y) = (y^2 -2xy)i + (3xy -6x^2)j

the cylinder r = a*cos(O) cut out of the sphere of radius a centered at origin. any help. thanks

Graph the solid bounded by the plane x+y+z =1 and paraboloid z=4-x^2 -y^2, and find the volume. here what i tried, but i cannot get the volume > f := x+y-1; > g := 4-x^2-y^2; > plot3d({f, g}, x = -2 .. 2, y = -sqrt(1-x^2) .. sqrt(1-x^2), axes = boxed); V:=Doubleint(g-f,y=-sqrt(1-x^2)..sqrt(1-x^2),x=-2..2): V=value(V);

 

The below code is quite good but one thing that is annoying is that we get the same trajectory all the time.

Any suggestions on how this can be fixed ? ( when the simulation starts over I would like to have a new trajectory)

I tried to put the random variable inside the procedure but the result was that all trajectories are changing all the time, which

was not really what I wanted .....

 

Hi everyone.

I have an assignment due in my computing class. However, I'm stuck on these 6 questions. Any help would be greatly appreciated. Please show all work, step by step. Unfortunately though, I can't use Maple shortcuts like "sum" to sum the terms in a sequence, so try not to use those.

Thanks in advanced :)

hej guys,

i have a 4x4 matrix, each element containing a complex function, depending on 'x' or whatever.

In fact i want to compute the 'eigenvalues' of the realpart of this matrix.

 

So far i tried:

assume(x,real):

then taking the real part of each matrix-element(function) on it's own, building a matrix again finally.

eigenvalues( ) gives me "Error, (in content/polynom) general case of floats not handled".

 

So yes, i appreciate any reply, thx in advance!!

max