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 vlaues of x where the function f(x)= cos x + cos (sqrt(2) x) attains its maximum 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 f(x) = cos x + cos sqrt2 x attains its maximum value is

The function f(x)=x^(-x),(x epsilonR) attains a maximum value at x is

The function f(x)=cos(log(x+sqrt(x^(2)+1))) is :

Find the maximum value of the function f(x) =sin x + cos x .

The function f(x)=x^(-x), ( x epsilonR) attains a maximum value at x which is

The domain of the function f(x)= sqrt(cos x) is

The equation E= cos x. sinx attains its maximum value at x=

The function a^(2)sec^(2)x+b^(2)cos ec^(2)x attains minimum value when