Is #f(x)=cosx*tanx-sinx# increasing or decreasing at #x=pi/6#?
1 Answer
Apr 16, 2016
f(x) = 0, a constant, for all x.
Explanation:
If
If
In any case, f(x) =0.
Here, h(x) = cos x, g(x) = sin x and a= an odd multiple of
