# {5.2} Change exponential equation to log form

rename
lala88's
version from
2015-07-15 01:27

## Section

Question | Answer |
---|---|

8^3 = 512 | log (base 8) 512 = 3 |

0.00001 = 10 ^-5 | log (base 10) 0.00001 = -5 |

15= square root of 225 | log (base 225) 15 = (1/2) |

(8/125) = (2/5)^3 | log (base (1/27) 3 = (-1/3) |

e^x =6 | x=ln6 |

x=y^z | log (base y) x =2 |

log (base 2) 1 = | 0 |

log (base 5) 3125 = | 5 |

log (base 1/4) 4096= | -6 |

log 0 | undefined |

log (-100) | undefined |

Find the domain of f(x)=log(base 2) (x+5) | (-5, infinity) |

Find the domain of f(x)=log (base 3) (5-x) | (neg. infinity, 5/2) |

Find the domain of f(x)=ln (7-2x) | (negative infinity, 7/2) |

Find the domain of f(x)= |x| | (negative infinity, 0) U (0, infinity) |

Find the domain of f(x)=log(x^2+1) | all real numbers |

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