Practicing Success
Find the value of x and y that satisfy the equations $\begin{bmatrix}3&-2\\3&0\\2&4\end{bmatrix}\begin{bmatrix}y&y\\x&x\end{bmatrix}=\begin{bmatrix}3&3\\3y&3y\\10&10\end{bmatrix}$. |
$(2,\frac{3}{2},)$ $(\frac{3}{2},2)$ $(\frac{3}{2},-2)$ $(2,-\frac{3}{2},)$ |
$(\frac{3}{2},2)$ |
Given, $\begin{bmatrix}3&-2\\3&0\\2&4\end{bmatrix}\begin{bmatrix}y&y\\x&x\end{bmatrix}=\begin{bmatrix}3&3\\3y&3y\\10&10\end{bmatrix}$ or $\begin{bmatrix}3y-2x&3y-2x\\3y&3y\\2y+4x&2y+4x\end{bmatrix}=\begin{bmatrix}3&3\\3y&3y\\10&10\end{bmatrix}$ Comparing elements we have $3y-2x=3$ ...(1) $2y+4x+10$ ...(2) Solving (1) and (2), we get $x = 3/2, y = 2$ |