Chapter7: Systems Of Equations And Inequalities
Section7.8: Solving Systems With Cramer's Rule
Problem 3SE: Explain what it means in terms of an inverse for a matrix to have a 0 determinant.
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Question
Transcribed Image Text:Q)
1)Prove or disprove:
A) If AB = AC and A # 0 then B C.
B) If B and C are both inverses of the matrix A, then B = C
2) solve by cramer's rule, where it
applies
4x + 5y = 2
y + 2z = 0
x +5y = 0
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