Let f be a differentiable function. Define the normal to the graph of f at the point a to be the line perpendicular to the tangent line at a. (a) What is the relation between the slopes of the tangent and the normal lines? (b) Derive the equation of the normal line to the graph of f at x = a.

An is a number that is written without a component. it is a number that is either or . an exponent is a or a number that another number is being to. the number that is being raised to a is called the . the or power tells you how many times to the base by . if an exponent is fractional then ask yourself the question: what when multiplied by itself a certain number of times will equal the number?