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OpenStudy (anonymous):
You are given a matrix A which is an 3x3 matrix with integer elements. det(A) = 2. Your friend tells you the solutions to Av=(4 -8 16) is v=(2 1 4) [these are vectors, so flip them vertically]. How do you know he/she is lying ? hint: use Cramers Rule
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OpenStudy (shubhamsrg):
well i just simply trust my friend..after all,,a friend in need is a friend indeed!! :P
OpenStudy (shubhamsrg):
otherwise i dont know! :D
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