## 55 Reputation

12 years, 277 days

## How can I use a function to scale the ax...

Maple 15

I have a function T = x*z(x), that I want to plot.

T should be drawn at the y-axis. But at the x-axis, there should not x be used, but z(x).

It shall look like:

T

¦

¦

¦

¦

¦-------------------------------------- z

Any idea how to do this?

BTW: I read, that Maple 16 has enhanced plotting functions. Is it worth the upgrade or are there just minor goodies?

## Can I set a default for assume ?...

Maple 15

In economics, variables are always real and often positive.

With assume(x>=0) I can set this for individual variables. But with many variables it is arduous.

Is it possible to set by default all variables to >=0 and define ony the exceptions individually?

Thanks you !

## How to transform equations...

Maple 15

With Maple I get the following result

For easier interpretation I would prefer the following, equivalent form:

I tryed a lot,...

## How to reduce a fraction...

Maple 15

As an intermeditae result I get from maple

It is obvious, that two fractions can be reduced by (1-t).

I could not reach this with simplify, solve, factor, expand, ...

Any idea?

In addition in the numerator (1-t)^2 is possible. How do I get this?

Thanks for any help !

## has testeq a bug?...

Maple 15

testeq() gives inconsistent results. See this example:

Equation (1):

computes to

Equation

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