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Be simplifi2. If y = x2 tan-1 x, find yn |
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Answer» Answer: ANSWER We have, y=tan −1 ( 1+x 2
−1
) LET,x=tanθv=tan −1 x y=tan −1 ( tanθ secθ−1
) y=tan −1 ( sinθ 1−cosθ
) y=tan −1 (tan 2 θ
)= 2 θ
y= 2 tan −1 x
dx dy
= 2(1+x 2 ) 1
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