How do you find the values of x and y given [(2y), (x)]=[(x-3), (y+5)]?
2 Answers
Dec 1, 2016
I found
Explanation:
For the two column matricesto be equal we need that:
so we substitute the second into the first for
rearrange:
substitute back into the secnd:
Dec 1, 2016
Explanation:
When 2 matrices are equal then.
color(blue)"the x-components are equal and the y-components are equal"
rArr2y=x-3larr" x-components" and
x=y+5larr" y-components" Substitute x = y + 5 into the x-components equation.
rArr2y=y+5-3rArry=2
" and " x=2+5=7