Test Prep

Cross-sectional solids appear in almost every AP® Calculus free-response set. These solids are built by … Read more

The AP® exams love questions about the area between 2 graphs. These problems appear on … Read more

Shaded regions pop up everywhere—textbook graphs, AP® free-response problems, and even window designs. Therefore, understanding … Read more

Ever shaded the space between two curves on a graph and wondered exactly how much … Read more

Net change seems fancy, yet it answers everyday “before vs. after” questions. In AP® Calculus, … Read more

Picture a skateboarder rolling along a straight sidewalk. First, the board glides east 4 meters, … Read more

Understanding the mean value theorem for integrals is essential for mastering AP® Calculus. This article … Read more

Logistic growth describes how a population or quantity increases rapidly at first but levels off … Read more

Exponential models with differential equations are powerful tools used throughout AP® Calculus AB-BC. They help … Read more

A particular solution of differential equation is a specific solution that meets a given condition. … Read more