The number of values of `x` where the function `f(x)=cosx+cos(sqrt(2)x)` attains its maximum is 0 (b) 1 (c) 2 (d) infinite

The number of values of x where the function f(x)=cosx+cos(sqrt(2)x) attains its maximum is (a) 0 (b) 1 (c) 2 (d) infinite

The number of values of x where the function f(x)=cos x +cos (sqrt(2)x) attains its maximum value is

The number of real solutions of the equation sqrt(1+cos2x)=sqrt(2)sin^(-1)(sinx),-pilt=xlt=pi is (a) 0 (b) 1 (c) 2 (d) infinite

Number of real solutions of sqrt(x)+sqrt(x-sqrt(1-x))=1 is (a) 0 (b) 1 (c) 2 (d) infinite

Number of real solutions of sqrt(2x-4)-sqrt(x+5)=1 is (a) 0 (b) 1 (c) 2 (d) infinite

Number of points where the function f(x)=(x^2-1)|x^2-x-2| + sin(|x|) is not differentiable, is: (A) 0 (B) 1 (C) 2 (D) 3

The number of values of a for which the lines 2x+y-1=0 , a x+3y-3=0, and 3x+2y-2=0 are concurrent is (a).0 (b) 1 (c) 2 (d) infinite

Consider the function f(x)={xsinpi/x ,forx >0 0,forx=0 The, the number of point in (0,1) where the derivative f^(prime)(x) vanishes is 0 (b) 1 (c) 2 (d) infinite

The value of f(0), so that the function f(x)=(1-cos(1-cosx))/(x^(4)) is continuous everywhere is

The value of f(0), so that the function f(x)=(1-cos(1-cosx))/(x^(4)) is continuous everywhere is