1.

Which of the following function is even function?

Answer»

f(X)=LOG`(1-x)/(1+x)`
f(x)=`x.(a^x+1)/(a^x-1)`
f(x)=`log[x+sqrt(1+x^2)]`
f(x)=`sqrt(1+x+x^2)-sqrt(1-x+x^2)`

Answer :B


Discussion

No Comment Found