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OpenStudy (anonymous):

the easiest way to solve a set of linear eqns in 3 variables using matrix or determinents

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OpenStudy (anonymous):

Determinents allow you to see if the system is linearly independant (or not) without needing to actually solve the system. det() = 0? i.e. 1x + 2y + 3z = 0 (eq 1) -2x + 0y -2z = 2 (eq 2) -1x + 2y + 1z = 2 (eq 3) is a system that's not linearly independant (eq 3 = eq 2 + eq 1) Therefore, there is not a unique solution for the 3 variables x,y, & z.

OpenStudy (anonymous):

Cramer's Rule

OpenStudy (anonymous):

best way is to find through Cramer's Rule

OpenStudy (anonymous):

Best way to find it is to use Gaussian elimination. Cramer's rule is computationally inefficient, but easier on the brain if you have a calculator.

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