if `f:[-20,20]->R` deefined by `f(x)=[x^2/a]sinx+cosx` is an even fucntion, then set of values of `a` is

If f:[-20,20]->R defined by f(x)=[x^2/a]sinx+cosx is an even fucntion, then set of values of a is

If f:[-20,20]->R defined by f(x)=[x^2/a]sinx+cosx is an even function, then set of values of a is

If f:[-20,20]rarr R defined by f(x)=[x^2/a]sin x + cos x is an even function. Then evaluate the set of values of 'a'

If f: R->S , defined by f(x)=sinx-sqrt(3)cosx+1, is onto, then find the set Sdot

Maximum value of f(x)=sinx+cosx is :

Maximum value of f(x) =sinx+cosx is :

The function f(x)=sinx+cosx will be

The function f(x)=(sinx)/(sinx-cosx) is discontinuous at -

The range of f(x)=cosx-sinx is

Let a function f:R to R be defined by f(x)=2x+cosx+sinx " for " x in R . Then find the nature of f(x) .