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Why simplify doesn't work?

asked 2012-11-22 13:17:49 -0500

ozik gravatar image

updated 2012-11-22 13:42:42 -0500

calc314 gravatar image

Hi! My problem is that I don't want to use simplify_full(). It messes up the way my formulea look preety bad. Yet I have in them terms of the form:

f(x,y)=(x^y)^(1/y)

and these a left untouched by simplify(). Is there any way for sage to recognize, that f=x without simplify_full()?

.

(Here's what i mean by messed up formula:

var('x,b2,b1')

f1(x,b1,b2)= e^(-x/b2)/b2 - e^(-x/b1)/b1

f2(x,b1,b2)= x

f1=f1( x=log( (b1/b2)^(b1*b2/(b1-b2)) ) )

f2=f2( x=log( (b1/b2)^(b1*b2/(b1-b2)) ) )

show( f1.simplify_full() + f2.simplify_full()== (f1+f2).simplify_full() )

The lhs looks way better, doesn't it?)

.

Big thanks in advance for any comments!

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answered 2012-11-22 21:11:55 -0500

simplify_full() just runs the specialized simplify_*() routines one by one. You can call them individually and see if they give you better results.

sage: x.sim<tab>
x.simplify            x.simplify_full       x.simplify_rational
x.simplify_exp        x.simplify_log        x.simplify_trig
x.simplify_factorial  x.simplify_radical
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Great many thanks!

ozik gravatar imageozik ( 2012-11-27 03:54:13 -0500 )edit

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Asked: 2012-11-22 13:17:49 -0500

Seen: 209 times

Last updated: Nov 22 '12