Q9 of 26 Page 1

Find :

OR


Integrate the following w.r.t. x


Let






Putting cosx = t ⇒ -sinx dx = dt




Let



-1 = A(1-t)(1+2t)+B(1+t)(1+2t)+C(1-t)(1+t)


Put 1-t = 0, we get


-1=6B


Put 1+t = 0, we get


-1=-2A


Put 1+2t = 0, we get



Now,








OR


We have,




Putting 1-x2=t


⇒ -2x dx =dt





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