The document contains solutions to calculus problems involving finding maximum and minimum values of functions, determining critical points, and investigating functions for maxima and minima. Several functions are given as examples, including f(x)=x^3-6x^2+12x-3, f(x)=e^x +2cosx+ e^-x, and f(x)=sin(x)(1+cos(x))^. The document examines these functions and discusses determining critical points and maxima/minima values.