# Questions tagged [simplifying-expressions]

Questions on manipulating complicated expressions and making them look simpler using Simplify, FullSimplify and Reduce.

1,719 questions
Filter by
Sorted by
Tagged with
1k views

### Nested Sums to multiple sum

I would like to automatically "move nested sums to the left". I mean, just take out of an expression all the summations and go from a nested Sum to a multiple sum. Something like starting with: ...
533 views

### Using Hold correctly with Simplify and ComplexityFunction

It seems like Mathematica immediately evaluates the expression Sqrt@I to (-1)^(1/4). I'm trying to use ...
209 views

### How can I get Mathematica to simplify my expression?

4.*^-12 Sqrt[3.0254210421890627*^22 - 6.25*^22 T6^2] The above expression is equal to Sqrt[0.48406736675024997 - T6^2] ...
2k views

### Why does Simplify ignore an assumption?

Here is the example: Simplify[x + y, x + y == a] Simplify[x + y, x + y == 5] Mathematica 9 output: x+y 5 I expect the ...
390 views

### FullSimplify inconsistency

I'm pulling my hair out with this one. I have two complex functions f and g, ρ is real. ...
161 views

### Why are some equal expressions more equal than others?

n1 = 1/3 (2 + (-Sqrt + 2 Sin[(2 π)/9])/(Sqrt Cos[π/9] - Sin[π/9])); n2 = 1/2 + Sin[π/18]/(3 Cos[(2 π)/9] + Sqrt Sin[(2 π)/9]); n3 = 2/3 (1 - Cos[4 π/9]); ...
9k views

### Remove annoying Conjugate

Here is an expression ...
340 views

### How do I simplify an embedded sub-expression without affecting other sub-expressions?

I have an expression which is very large and which has several sub-expressions with head Conjugate. What I want to do is simplify the ...
17k views

### Mathematica not simplifying square root expressions even with assumptions

I have the following expression: expr=(Sqrtr Sqrt[(4+r^2) (2+r (r+Sqrt[4+r^2]))])/(4+r (r+Sqrt[4+r^2])) Then ...
2k views

### Non Commutative sorting in Mathematica

I have been trying to do some oscillator algebra in Mathematica and having troubles with sorting and simplifying expressions. I am using the NCAlgebra package which helps to improve the properties of <...
290 views

### Simplify the multiplication such as $a*(b+c)$ to $a*b+a*c$

I am trying to solve this problem here but have to understand basics. Suppose I have a multiplication such as $a*(b+c+d+...+x)$. How can I multiply it to the result $a*b+a*c+...+a*x$? Trials [Not ...
2k views

### a problem about simplifing conjugate

the situation is as follows ...
498 views

### What are the default TransformationFunctions used in Simplify and FullSimplify?

If I do Simplify[(c^3 - s^3)^2 - (s^3 + c^3)^2, TransformationFunctions -> Automatic] (i.e. a verbose version of default behaviour), what transformation ...
5k views

1k views

1k views

### How to Simplify equations over a Ring with Mathematica?

For example, when we work over a ring, the equation x^3=0 does not imply x^2=0 or x=0, but ...