[" 12.If "f(x)=sqrt(1+cos^(2)(x^(2)))" ,then the valu "],[f'((sqrt(pi))/(2))" is "]

if f(x)=sin((pi)/(3)[x]-x^(2)) then the value of f((sqrt(pi))/(3)) is

If f(x)=sqrt(1+cos^(2)(x^(2))), then f'((sqrt(pi))/(2)) is (sqrt(pi))/(6)(b)-sqrt(pi/6)1/sqrt(6)(d)pi/sqrt(6)

If f(x)=sqrt(x^(2)+1) , then the value of f'(-1) is -

If f(x)=sqrt(4-x^(2))+sqrt(x^(2)-1), then the maximum value of (f(x))^(2) is

f(2)(sqrt(1-cos x))^(2)=(sin x)^(2)

f(x)=cos^(-1)(x^(2)/sqrt(1+x^(2)))

f(x)=cos^(-1)(x^(2)/sqrt(1+x^(2)))