DERIVING COMPOSITE FUNCTIONS (CHAIN RULE)
KEY IDEA: Differentiate both sides of an equation with respect to x, then solve for dy/dx.
Start with the original equation.
Differentiate both sides term-by-term with respect to x.
treat y as a function of x (use the chain rule for y-terms)
Apply derivatives.
Solve for dy/dx by isolating the derivative term.
Simplify as needed.
KEY IDEA: Differentiating multiple times to achieve a function's second, third, fourth, or higher derivatives.
Start with the original equation.
Derive multiples times using different derivative rules as needed.