Question
Use Cramer's rule to solve the system for $x$.$$\left\{\begin{array}{l}a x+b y+c z=d \\e x \quad+f z=g \\h x+i y \\\quad=j\end{array}\right.$$
Step 1
This gives us: \[ \begin{bmatrix} a & b & c \\ e & 0 & f \\ h & i & 0 \\ \end{bmatrix} \begin{bmatrix} x \\ y \\ z \\ \end{bmatrix} = \begin{bmatrix} d \\ g \\ j \\ \end{bmatrix} \] Show more…
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