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no i don't think so because i did that and if i defferentiate the answer i got, i can't get back to sin(x2)

then its not possible... thanks! its like sinX^2. BUT why is it that its not possible.. what are the prooves? a younger brother is bordering me with it and he said i should give him concret mathematical proves. thanks

i got sinX^2 and when I differentiate this I got 2XcosX^2

mr gb7nash, yes i mean ∫cos x^2. but the relation u used above can't work. i tried it but the rsult i got when i defferentiate it i can't come back to the original answer. please check it.

i want someone to help me with the integral of cosX^2 i attempted using integrals by parts.. wat i got when i differentiate it i didn't go back to the same integral equation. is it that it is not possible??