degreeplus
New member
- Joined
- Oct 7, 2006
- Messages
- 24
I need help solving and understanding this integral
∫3sin3t(9sec23t)
the answer is -csc 3t but what I get is -sec 3t
Here is what I did:
I set the (9sec23t) to cos23t9
then I multiplied it by sin 3t to get 3∫cos23tsin3t and then turned it into ∫3cos3tsin3t∙cos3t1
then this becomes 3∫tan3t∙sec3t
and I get -sec 3t
Where did I go wrong?
Thanks for any help in advance
∫3sin3t(9sec23t)
the answer is -csc 3t but what I get is -sec 3t
Here is what I did:
I set the (9sec23t) to cos23t9
then I multiplied it by sin 3t to get 3∫cos23tsin3t and then turned it into ∫3cos3tsin3t∙cos3t1
then this becomes 3∫tan3t∙sec3t
and I get -sec 3t
Where did I go wrong?
Thanks for any help in advance