My trig teacher says that my solution would not work because you can't multiply by undefined. Why can't you? Is there a rule, postulate, etc... that says you can't? If so, what is it? I think that if you multiply by undefined you would get undefined. Is this wrong.(adsbygoogle = window.adsbygoogle || []).push({});

Thanks for reading.

**Physics Forums - The Fusion of Science and Community**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Is it possible to multiply by 'undefined'?

Loading...

Similar Threads for possible multiply 'undefined' | Date |
---|---|

A Getting as close as possible to a solution (system of equations)? | Jul 13, 2017 |

Is it possible to find this number without brute force? | Aug 21, 2015 |

Vector multiply that is NOT dot or cross? | Jan 21, 2015 |

Is it possible to determine a basis for non-subspace spaces? | Dec 9, 2014 |

**Physics Forums - The Fusion of Science and Community**