If `f_k(x)=1/k(sinx+cos^kx)` then `f_4(x)-f_6 (x)=` (A) `1/12` (B) `5/12` (C) `(-1)/12` (D) `-5/12`

If f_(k)(x)=(1)/(k)(sin^(k)x+cos^(k)x) then f_(4)(x)-f_(6)(x)=(A)(1)/(12) (B) (5)/(12) (C) (-1)/(12) (D) -(5)/(12)

Let f_K(x)""=1/k(s in^k x+cos^k x) where x in R and kgeq1 . Then f_4(x)-f_6(x) equals (1) 1/6 (2) 1/3 (3) 1/4 (4) 1/(12)

If f(x)=3x^(4)+4x^(3)-12x^(2)+12 , then f(x) is

Let f_(k)(x)=(1)/(k)(sin^(k)x+cos^(k)x) where x in R and k>=1. Then f_(4)(x)-f_(6)(x) equals

Let f(x)={(x^4-5x^2+4)/(|(x-1)(x-2)|)\ \ \ \ ,\ \ \ x!=1,\ 1 6\ \ \ \ \ \ \ \ \ \ \ \ \ ,\ \ \ x=1 ,\ \ \ \ \12 ,\ \ \ \ \ \ \ \ \ x=2 . Then, f(x) is continuous on the set R (b) R-{1} (c) R-{2} (d) R-{1,\ 2}

If f(x)=x^2-4x+1 then find f(A) when A=[[2,3] , [1,2]]

If f(x)=|x-1|times|x-2|times|x-3| . Then f'(1.2)=?

f(x)=-(1)/(3)x^(3)+5x^(2)+12