# MandysNotes

## Primitives of Trigonometric Functions

13 November 2012

$\int{ \color{Goldenrod}\sin}\ {z} = - {\color{Blue}\cos}\ {z}$

$\int{\color{Blue} \cos}\ {z} ={\color{Goldenrod} \sin}\ {z}$

## How To Take The Square Root of a Limit Function

22 September 2010 In Limits

## First Order Linear Differential Equations

22 September 2010

## Related Rates: Baseball Problem

28 January 2010

Disclaimer: I did not create nor do I own these videos. I have simply embedded them, courtesy of YouTube.

The problem presented here is:

A baseball diamond is a square with side 90 feet.  If a batter hits the ball and runs towards first base with a speed of 20 ft. per sec, at what speed is his distance from second base decreasing when he is halfway to first base?

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