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Mathematics 28 Online
Study2Learn:

Which pair of matrices are multiplicative inverses of each other? http://prntscr.com/kqjsrb

Vocaloid:

yikes afaik you just have to go through and multiply the matrices in each choice to see which choice gives you the identity matrix as a product

Vocaloid:

using software I end up getting B as the solution since A*B and B*A are both the identity matrix lmk if you get something different

Study2Learn:

A bit difficult, but yes I agree with you. I think it's B, when I multiplied the matrices I got:[1 0] [0 1]

Study2Learn:

and that's why the matrices are 'multiplicative inverses'

Study2Learn:

and they're both identity matrix

Vocaloid:

yup for future reference you can just tag me @vocaloid instead of messaging me each time

Study2Learn:

Okay, will do!

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