Problem calculating an expression with roots
01-30-2015, 10:37 PM (This post was last modified: 01-30-2015 10:41 PM by Mark Hardman.)
Post: #4
 Mark Hardman Senior Member Posts: 506 Joined: Dec 2013
RE: Problem calculating an expression with roots
Reformatted so that the Latex expressions work.

(01-30-2015 09:44 PM)retoa Wrote:  Hello.

I am trying to calculate a very simple expression with the Prime:

$$\frac{\sqrt{3}*\sqrt[3]{2*x}}{\sqrt[4]{3*x}}$$

I don't know how to write that without latex but the attachment is an image of the Prime display.

As you can see the answer is not very useful, actually it should simply be:

$$\sqrt[4]{432*x}$$

or

$$2^{1/3}*3^{1/4}*x^{1/12}$$

If I try to simplify the prime goes in a loop...

What do I have to do to obtain the correct answer?

Thank you very much

reto

Are you sure?

If I define:

f:=(x)->√3*(2*x)^(1/3)/(3*x)^(1/4)

and

g:=(x)->(432*x)^(1/4)

And evaluate both of them at 1, I get 1.65814935214 and 4.55901411391 respectively.

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