Show that the function given by `f(x)=4x+18` is strictly increasing on R.

Show that the function given by f(x) = e^(2x) is strictly increasing on R.

Is the function f(x) = 5x - 4 strictly increasing on R ?

Prove that function f given by f (x) = log ( cos x ) is strictly decreasing on (0, (pi)/(2)) and strictly increasing on ((pi)/(2) , pi).

Which one of the following is true? For the function f(x)= cos x f is strictly increasing in (pi, 2pi)

Is the function f(x) = cos x strictly increasing in (0, pi) ?

Which one of the following is true? For the function f(x)= cos x f is strictly decreasing in (pi, 2pi)

Is the function f(x)= tan^(-1)x strictly increasing?

Is the function f(x)=cot^(-1) x strictly increasing?

Show that the function f: R to R defined by f(x)=2x^(2) , is neither one - one onto.