## 25 Reputation

9 years, 129 days

## How to get the name part of an indexed n...

For example, if we have

How can get the 0.312 part of a? I have tried evalf and op without success.

## A bug in MultiSeries?...

Maple

I am trying to use MultiSeris package to expand a function (nu3 in the code).

The function has two variables, w and u. I want Maple to treat w as a constant and u as the variable.

As you can see from the code, somehow if I replace w by any rational number and do the expansion, I get an expansion with a constant * u term. However, if I replace w with zeta(3) (or pi), then some how the u term vanishes. I think this cannot be correct. Is this a bug?

 (1)

 (2)

 (3)

 (4)

 (5)

## How to simplify formula like e^(ln(2*Pi)...

Maple

I have tried

assume(n >= 0, n::integer);

But still,

simplify(exp(-n*ln(2*Pi)))

does nothing.

I want to convert it to (2*Pi)^(-n).

## How to stop maple from simplify an integ...

Maple

If I just want to define an itegral and do not want maple to simplify it to a closed form, what should I do?

For example, I want define

s := int(exp(-x^2)*cos(2*x*y), x = 0 .. infinity).

Maple automatically simplify s to

(1/2)*sqrt(Pi)/exp(y^2)

But I want to keep s in integral form.

## How to define a function with result of ...

I need a function like this:

 (1)

But I know that the sum actually simplifes.

 (2)

So I actually want define my function as

 (3)

Is there any way to do this with programming instead of copying the result of simplify manually?