Question 4: Find $\frac{dy}{dx}$.

$$ y=\cos x-3\sqrt{x}+\frac{6}{e^x} $$

• Solution: (remember the Derivative Sum Rule)

Question 5: Find $\frac{dy}{dx}$ for $y=\frac{\sec x}{\tan^2x}$.

• Solution:

Question 6: Find $\frac{dy}{dx}$ for $y=\frac{\cos x}{1+\cos x}$.

• Solution:

Question 7: Find $\frac{dy}{dx}$.

$$ \frac{dy}{dx}=\frac{5}{\cos x}+\frac{1}{\tan x} $$

• Solution:

Question 8: Find $\frac{dy}{dx}$.

$$ y=2(\csc x+\cot x)(\csc x-\cot x) $$

• Solution: