Posted by help pls on Wednesday, May 22, 2013 at 8:01am.
integral of sin(x^2) dx
i actually got the ans, but aftr differentiating the answer i am not getting back the question

integral calculus  Hannah, Wednesday, May 22, 2013 at 8:25am
let u=x^2
du= 2x dx
dx=du/2x
dx=du/2sqrt(u)
1/4 cos u is the integral

integral calculus  bobpursley, Wednesday, May 22, 2013 at 9:05am
http://www.numberempire.com/integralcalculator.php
This involves the error function, not an elementary problem. Hannah has made an error.

integral calculus  Hannah, Wednesday, May 22, 2013 at 9:09am
I'm sorry about that. Can you explain why there is an error Mr. Pursley? I genuinely don't understand how there is an error.

integral calculus  Steve, Wednesday, May 22, 2013 at 10:28am
Your substitutions are good, but you dropped something. You should have watched the details:
∫sin(x^2) dx = ∫sin(u) / 2√u du

integral calculus  help pls, Wednesday, May 22, 2013 at 10:04pm
then how do we proceed ??
is their any solution to this problem?
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