Calculus is used in every branch of the physical sciences, actuarial science, computer science, statistics, engineering, economics, business, medicine, demography, and in other fields wherever a problem can be mathematically modeled and an optimal solution is desired. It allows one to go from (non-constant) rates of change to the total change or vice versa, and many times in studying a problem we know one and are trying to find the other.

## College Physics – Raymond A. Serway, Chris Vuille – 8th Edition

While physics can seem challenging, its true quality is the sheer simplicity of fundamental physical theories–theories and concepts that can…