WB3.2 - First Deritvative Test

Apply the first derivative test to f(x)=-x^{3}-x^2.

Apply the first derivative test to f(x)=\frac{1}{x^2-4}.

Apply the first derivative test to f(x)=\cos(2x) over [-\pi,\pi]

Apply the first derivative test to f(x)=\left(-4x-8\right)^{\frac{2}{3}}.

Apply the first derivative test to g(x)=-\frac{2}{x^2-16}.

Apply the first derivative test to p(x)=x^{3}-2x^2-4.

Apply the first derivative test to r(x)=\sin(2x) over [-\pi,\pi].

Apply the first derivative test to q(x)=-x^{3}+2x^2-1.