Question

If f(x) = x tan-1 x then f'(1) =...​

Answer 1

Step-by-step explanation:

g(x)=xtan

−1

x

⇒g

′

(x)=tan

−1

x+

1+x

2

x

⇒g

′

(1)=tan

−1

(1)+

1+(1)

2

1

=

4

π

+

2

1