Question

trigo transformation. integral.

Answer 1

hint : derivative of `cotx`

Answer 2

yes the integral of csc^2 is cot

Answer 3

how to answer this problem? =)

Answer 4

yes :)
try u substitution : `2-3x = u`

Answer 5

du is -3 dx

Answer 6

yes, keep going..

Answer 7

its -1/3 cot (2-3x)

Answer 8

+c

Answer 9

that `-` sign should not be there

Answer 10

always verify your answer with wolfram :
http://www.wolframalpha.com/input/?i=%5Cint+csc%5E2%282-3x%29

Answer 11

wolfram is ur best friend :)

Answer 12

ah yes its - cot.. it would be positive

Answer 13

thank you so much @ganeshie8 =)))

Answer 14

np :)