OK – The shortcuts!! Thank goodness – i thought she was going to make me do it all the definition way which is such a pain in the a** - why did i have to do it the long way anyway? I deserve the shortcut. I don’t need to earn it – i am owed by divine right. i’m also hungry. I should have eaten more at lunch. Wonder if I could pretend I have to go to the bathroom.. And go down to the bookstore and get chocolate…mmmmm chocolate
4. Product Rule 5.Quotient Rule 6. Generalized Power Rule
Derivation of Power Rule n terms
Derivation of Product Rule
Examples
Hints on Quotients 1.See if the fraction simplifies first. is harder as is. If you factor and cancel it makes the problem MUCH easier. 2.Share a simple denominator. isn’t as easy to simplify as
Equation of Tangent line What do you need for the equation of a tangent line? You need 1) slope 2) point This is an easy problem with short cut derivatives.
How will we get the slope? By definition the derivative is the slope of a curve. So, you will take the derivative of the function and plug x (and maybe y) into the function to get the slope.
How will we get the point? Usually given to you. How easy. Find the equation of the line tangent to f(x) at the point (4, 1) if
Example