## CLEP Guides

American Government Biology College Mathematics General CLEP General Tips Human Growth And Development Humanities Introductory Psychology Principles Of Marketing Sociology US History 1 US History 2# Negation

Negation is usually represented with the sign but we will be using ~. Negation is only used on a single proposition and is the simple process of taking a process. So if A = True then ~A = False. The truth table is as follows:

As you can see negation is a fairly easy operation. Where this gets tricky is when they ask you for the negations of other equations. So the may ask for negation of A /\ B. So just write out your truth table for A /\ B and then add another column like this:

A~A | |
---|---|

T | F |

F | T |

A | B | A /\ B | ~(A /\ B) |
---|---|---|---|

T | T | T | F |

T | F | F | T |

F | T | F | T |

F | F | F | T |