# Rules of Differentiation: The Constant Multiple Rule

### Erin Horst

Now that we have explored derivatives, we can now progress
to the rules of differentiation. These rules are simply formulas
that instruct the learner how to compute derivatives depending
on the given function.

Another simple rule of differentiation is the constant multiple
rule, which states

This rule simple states that the derivative of a constant times
a function, is just the constant times the derivative. Consider
the following functions as illustrations.

The following graph illustrates the function y=5x and its derivative
y'=5.

The following graph illustrates the function y=(1/2)x and its
derivative y'=(1/2).

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