" Let "S={x in R:cos(x)+cos(sqrt(2)x)<2}." Then "

Let f(x) = cos(x) + cos(sqrt(3)x) AA x in R . The number of values of x for which f(x) is maximum is

Let f(x)=cos(sqrt(2)x)+cos(sqrt(3)x). Consider the following statements

Let S= {x in R : x ge 0" and "2|sqrt(x)-3|+sqrt(x)(sqrt(x)-6)+6=0} . Then S : "…………"

Find the derivatives w.r.t. x : cos^(-1)x+cos^(-1)sqrt(1-x^(2))

sin x + cos x = sqrt (2) cos A

Let S equiv {x in R : (sqrt 3 sqrt 2)^x (sqrt 3 - sqrt 2)^x = 10} . Then the number of elements in S is :

Let f(x)=sqrt((cos^(-1)sqrt(1-x^(2))-sin^(-1)x)) then which of the following statement/s is are correct -

If tanx=b/a then sqrt((a+b)/(a-b))+sqrt((a-b)/(a+b))= ........................... A) (2 sin x)/(sqrt(sin2x)) B) (2 cos x)/(sqrt(cos2x)) C) (2 cos x)/(sqrt(sin2x)) D) (2 sin x)/(sqrt(cos2x))

Find the derivative of cos(sqrt(2x)) w.r.to. x