In this video tutorial, you will learn how to find the derivative of the reciprocal function, 1/x. You will make use of the definition of a derivative.

The teacher will also provide a review on finding the equation for a line tangent to a function at a particular point. To do this, you not only calculate the derivative, but we'll also review the use of the point-slope formula to arrive at the tangent line formula, given the point of tangency and the slope of the line.