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Results tagged with assumptions
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user 5208
Questions about the function Assuming[], the $Assumptions system variable, and the Assumptions option of functions such as Simplify[] and Integrate[].
19
votes
3
answers
729
views
Why does Mathematica simplify $x/x\to1$?
If I enter x/x, I get 1. Such behavior leads to this:
Simplify[D[Sqrt[x^2], x, x]]
0
The same would be even if I use Together instead of Simplify.
One could then think that $\sqrt{x^2}$ is do …
- 7,182
6
votes
1
answer
143
views
Is (x|y|...)∈set the same as x∈set&&y∈set&&...?
This was in the context of specifying Assumptions to functions like Simplify or Integrate. …
- 7,182