Posted by help pls on .
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,
let u=x^2
du= 2x dx
dx=du/2x
dx=du/2sqrt(u)
1/4 cos u is the integral 
integral calculus 
bobpursley,
http://www.numberempire.com/integralcalculator.php
This involves the error function, not an elementary problem. Hannah has made an error. 
integral calculus 
Hannah,
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,
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,
then how do we proceed ??
is their any solution to this problem?