## modification of an expression...

Hello people in mapleprimes,

I want to simplify the next expression which has 1/k as its exponent,

especially, I want to collect for T.　I hope you will teach me how to do it.

(F__X*(Omega+1)/(F__I*(beta-1)*T))^(1/k)*(T/phi)^(beta/k)

If I do as

simplify(%)assuming(symbolic);

the output is

F__X^(1/k)*(Omega+1)^(1/k)*F__I^(-1/k)*T^((beta-1)/k)*(1/(beta-1))^(1/k)*phi^(-beta/k)

But, as all variables has 1/k as its exponent, I want to collect it to (...)^(1/k).

Is this possible?

taro

## Need simplified answer as float...

 (1)

 (2)

Ramakrishnan V

rukmini_ramki@hotmail.com

## Extracting like exponents separately ...

I am looking to extract exponents from a sum of products of three variables A, B and C. An example being:

f:=5*A^4*B^3*C^7   +   3*A^2*B^1*C^7  +  31*A^3*B^6*C^11  + ...

I used the following procedure to extract the exponents of each variable:

Exponents:= proc(p, x::name)
local
t;
coeffs(p,x,t);
map(degree, [t], x)
end proc:

This works great and will extract the powers for each term:

Exponents(f,A):        [4,2,3]

Exponents(f,B):        [3,1,6]

However, when the exponents are the same it does not count them twice. An example of this being with the variable C above where two of them have an exponent = 7 and it only counts it once.

Exponents(f,C):        [7,11]

Is there a simple way to modify the procedure to list the powers regardless of if they appear more than once?

## Exponents to floating point...

Maple 15

eq:=1/2*x^(1/2) + 1/13*x^(1/3) + 1/26*x^(45/37);
evalf(eq);

The exponents are still fractions.  I want to have floating point exponents.

0.5*x^0.500000 + 0.07692307692*x^0.333333 + 0.03846153846*x^1.216216216

How do I do this?

Tom Dean

## Set Uneval globally/ Simplification with unspecifi...

Hello, i got the following problem. I have a function, say u(h,e) whith multiple exponents . As long as Maple does not know that u(h,e) is positiv it won't make the simplification and return u(h,e) as expected. From my view i have two possibilites to solve this problem:

1) Define u(h,e) to be positive. Sounds intuitive, but i didn't manage to find the right definition

2) Give maple the function e.g. u:=e+h^2 and simplify the epression in uneval quotes with assumption positive for e and h.

Whereas I have solution 2, the problem is that i would need excessive amounts of uneval quotes '' at the start of my worksheet, not to run out of them.

I definitly need my epressions in unevaluated forms and would be happy to hear any ideas.

Greetings, Fabian