## 155 Reputation

10 years, 117 days

## sum cannot return the symbolic summation...

Maple

We know that sum can return an symbolic summation, for example,

But sometime the relation of parameters in series cannot be defined easily. And it seems that sum cannot correctly determine the symbolic summation of this kind of series:

Maybe it's due to the value of _C(infinite) is undefined. Does anyone have good idea to compute the symbolic summation of this series?

I'd appreciate any help on this topic. Thank a lot.

sum_cannot_return_symbolic_summation.mw

## Zoom animation with time...

Maple

Dear all,

I tried to display an animation which can zoom as the time goes.

But it seems that if I display several animations in one plot window, it will display the animation with the maximum view size from these animations, not separately display these animations with their view size.

There are two examples:

Case1,

a1 := animate(plot, [x^2, x = -1 .. t, view = [-1 .. 1, 0 .. 1]], t = -1 .. 1);

a2 := animate(plot, [x, x = -1 .. t, view = [-1 .. 1, -1 .. 1]], t = -1 .. 1);

display(a1, a2);

Case2,

animate(plot, [x^2, x = -1 .. 1, view = [t .. 1, 0 .. 1]], t = 0 .. -1)

Is it possible to zoom the animation with time? What parameter should I set?

The related maple file is attached.

zoom_animation_with_time.mw

## differential of complex function conjuga...

Maple

Hi all,

As we know that the differential of conjugate(z) is non-analytic.

But it seems that the diff gives the solution about the complex function conjugate(z)

What does it mean?

## Export nodal points from a plot...

Hi all,

I ploted the cylinder like this:

with(plottools);
with(plots);
display(cylinder([1, 1, 1], 1, 3), orientation = [45, 70], scaling = constrained, grid = [2, 2, 2]);

Is it possible to export nodal points of the plot?

Thank a lot.

## Piecewise fuction of int...

Maple

Hi all,

As we know that the indefinite integral in Maple is defined up to a piecewise constant.

For example,

Due to the indeterminate range of variable n, int returns the piecewise function.

But in the other similar case, we get a generic solution rather than a piecewise function,

Why not to returns the result like this,

Thanks for any help.

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