All Questions
Tagged with expression-construction simplifying-expressions
7
questions
1
vote
2
answers
194
views
How to sort out/ extract positive and negative powers as list?
I have the following expression
expr = x1^d1 * x2^d2 * x3^d3;
where d1,d2,d3 can contain negative values/expression i.e. in ...
- 1,897
3
votes
0
answers
183
views
Computations with OptimizedExpressions without completely expanding them
I have to manipulate huge expressions that are rational functions of many (∼30) variables with integer coefficients. Storing them just as a ratio of two polynomials would be impractical. But they can ...
- 7,273
1
vote
3
answers
86
views
Summation and product term expressed in Mathematica [duplicate]
I have the following term which I would like to express correctly in Mathematica:
$$\sum_{i=1}^{m}\frac{1}{\prod_{j=1,j\neq i}^m(\rho_i-\rho_j)}$$
This means that for $m=3$ for example you should ...
- 181
0
votes
1
answer
119
views
I have a term 'Keff' in terms of 'W'. I need to write 'W' in terms of 'Keff'. Does Mathematica provide an option for that
I have read similar answers on this topic. I am still not able to execute my code.The code is as follows.
...
2
votes
1
answer
1k
views
How to parse string to expression? [closed]
When trying to make a string an expression I see some wrong results:
...
- 1,748
7
votes
1
answer
475
views
Arrange equation in normal form
Is there a way, or if not, how could one define a function which takes an equation in any form (for example as given by FullSimplify):
$$(A+X_0) x+By=3x$$
and ...
- 996
3
votes
1
answer
194
views
Write Integer powers as products
I need to wirte all occasions of
(a+b)^3,Ftp^2, Sin[th]^2, ...etc
as
(a+b)*(a+b)*(a+b), Ftp*Ftp, Sin[th]*Sin[th], ...etc
...
- 410