**Introduction**

This program plots the slope field for the differential equation in the
form .

If you have not used one of the programs posted on this website before,
you should read through
the information in the Intro to Programming
section first.

If you have a TI Connectivity Cable, you can download the program main.slopef.89p

**The Program **

:slopef( ) | {This will already appear if you named the program slopef} |

:Prgm | {This will already appear} |

:FnOff | {FnOff is in the CATALOG menu} |

:setMode("Graph", "Function") | {setMode is in the F6 menu under D} |

:7*(xmax-xmin)/83g | {xmax xmin can be typed in letter by letter} { is STO} |

:7*(ymax-ymin)/55h | |

:1/(0.4*g)^2a | |

:1/(0.4*h)^2b | |

:xmin+0.5*gx | |

:ymin+0.5*hz | |

:For k,1,12 | {For EndFor is in the F2 menu} {The 1 is a one} |

:zy | |

:For j,1,8 | |

:y1(x)t | {y1 is the Y followed by a 1} |

:1/(a+b*t^2)c | { is square root} |

:t*cs | |

:Line x-c,y-s,x+c,y+s | {Line is in the CATALOG menu} |

:y+hy | |

:EndFor | |

:x+gx | |

:EndFor | |

:EndPrgm | {This will already appear} |

**Running the Program**

You will need to enter a function *f*(*x,y*) into y1 and adjust the WINDOW accordingly
before running the program.