## Calculus Tutorial

*power rule*

#### Intro

The power rule says that if n is a real number, the derivative of xn = nxn-1

#### Sample Problem

#### Solution

Find the derivative of f(x)=10×3-15×2

F’(x)= (10×3-15×2)’

=(10×3)’-(15×2)’ apply the difference rule

=10(x3)’-15(x2)’ apply the constant multiple rule

=10(3×2)-15(2x) apply the power rule

=30×2—30x

# About The Author

Mathematics Teacher |

I was a teacher in Srilanka from 1992 to 2006. I took tuition from 1990 to 1991 in India. I do general work in Canada but I help to do homework to my daughters. I finished my teacher\'s training college diploma in Srilanka. I completed my B.Sc degree course at Bharayiar university in India. |

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