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Student Support Forum: 'Differential and integral calculus Abs[Sin[n x]]' topicStudent Support Forum > General > Archives > "Differential and integral calculus Abs[Sin[n x]]"

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Author Comment/Response
Takuya
02/25/12 01:24am

I want to take absolut value of Sin[n x].
The second derivative of this expression.
D[Abs[Sin[n x]], {x, 2}]
Then the results,
-n^2 Sin[n x] Abs'[Sin[n x]]+ n^2 Cos[n x]^2
Abs''[Sin[n x]]
This can't be integral in x.

I want to integration to [0,2 pi] the second derivative Abs [Sin [nx]] of.
How do I perform?

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Subject (listing for 'Differential and integral calculus Abs[Sin[n x]]')
Author Date Posted
Differential and integral calculus Abs[Sin[n x]] Takuya 02/25/12 01:24am
Re: Differential and integral calculus Abs[Sin[... Bill Simpson 02/28/12 7:56pm
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