In this theorem it states " Let A be a m x n matrix. That is For each vector(adsbygoogle = window.adsbygoogle || []).push({}); bin R^m, the column Ax=bhas a solution..." Why do they say thatbεR^m? Is that becausebis a mx1 column matrix where it has m rows making it belong to R^m?

**Physics Forums | Science Articles, Homework Help, Discussion**

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

# R^n and R^m

**Physics Forums | Science Articles, Homework Help, Discussion**