" (iv) "2x tan^(-1)x-log(1+x^(2))

2 tan ^(-1)x-log(1+x^(2))

Prove that (d)/(dx){2x tan^(-1)x-log (1+x^(2))}=2 tan^(-1)x.

Prove that 2x tan^(-1)x>ln(1+x^(2)),x>0

f(x)=2x-tan^(-1)x-log(x+sqrt(1+x^(2)))(x>0) is increasing in

f(x)=2x-tan^(-1)x-log|x+sqrt(1+x^(2))| is ……….. (x in R)

e^(tan^(-1)x)log(tan x)

f(x)=2x-tan^(-1)x-ln(x+sqrt(1+x^(2)));x in R then

f(x)=2x-Tan^(-1)x-log(x+sqrt(1+x^(2))(xgt0) is increasing in

If f(x)=tan^(-1)[(log((e )/(x^(2))))/(log (ex^(2)))]+tan^(-1)[(3+2 log x)/(1-6 log x)] then the value of f''(x) is