## 390 Reputation

11 years, 199 days

## replacing expression with function...

Maple 2018

If I have an expression which contains an unknown function f(t) e.g.

ex:=1+exp(f(t))*f(t+1)+f(t/2)

how do I replace it with some defined function F(t)?

Do I need to work with ::anything, i.e. something like

subs(f(t::anything)=F(t::anything),ex)

?

However this doesn't work.

## convert RootOf expression to actual anal...

Maple 15

I have big expressions containing RootOf() which are however pretty simple.

For example something like

RootOf(x^2+1,x)

Is it possible to convert this later into the actual solution? e.g. +-*I ??

## Function evaluation goes wrong, why?...

Maple 2015

Hey and Thanks for your input.

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Am I doing something wrong?

## Difference between type() and is()...

Maple 2018

Hello,

I'm currently wondering about the "real" difference.

is() or type() can be used both for true/false checks. However when should what be used preferably?

For example I do not see what is better over the other when doing simple checks such as

is(2,'integer')

type(2,'integer')

Thanks for clarifying.

## Cut of Errorfunction...

Maple 15

I'm currently wondering about the cut I'm looking for in the following worksheet.

I evaluate it in 2 ways but get different answers. Any idea what the problem here is?

Thanks

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