Practice problem
Let AAA and BBB be matrices. If A4×12A_{4\times12}A4×12 and AB4×12AB_{4\times12}AB4×12 what is the size of BBB?
4×44\times44×4
4×124\times124×12
12×412\times412×4
12×1212\times1212×12
These matrices can't be multiplied.
Type a concept, like “slope” or “photosynthesis”.
