Welcome to Differential Calculus!

In this lesson, you'll learn the words "derivative" and "differential". They are mostly the same - we will learn the difference in Integral Calculus.

Although they may seem intimidating, the words "differential" and "derivative" just mean "the slope".

For example, if we have a function

then we say the derivative of the function is the slope, which is $7$ in this case.

Another way to write this is