The number of values of x where f(x) = `cos x + cos sqrt2` x attains its maximum value is

The number of values of x for which f(x)= cos x + cos sqrt(2)x attains its maximum value is-

The number of values of x where the function f(x) = cos x + cos (sqrt2 x) attains its maximum is

The number of values of x where the function f(x)=cosx+cos(sqrt2x) attains its maximum is

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

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