Hi, here's the problem:(adsbygoogle = window.adsbygoogle || []).push({});

for m = {{a, b}, {c, d}},

m \cdot m is suppose to = {{a^2 + b c, a b + b d}, {a c + c d, b c + d^2}}

It's been ages since I took linear algebra and now can't figure out how this works.

Thanks for your help!

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

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

# Matrix dot product

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