lberries08
21.10.2020 •
Mathematics
Solve the system by using a matrix equation.
6x-9y= 3
3x-4y=7
a. (17,11)
b. (12, 14)
c. (18, 12)
d. (15, 10
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Ответ:
|3-47|
Apply to Row2 : Row2 - 1/2, Row1
|6 -9 3|
|0 1/2 11/2|
3 Simplify rows.
|6-93|
|0111|
Apply to Row1 : Row1 + 9 Row2.
|60102|
|01 11|
5 Simplify rows.
|1017|
|0111|
X= 17
Y=11
x=17
y=11
Ответ:
Graphical form: -px%2Br=-8%2Ax-2 simplifies to -px%2Br%2B8%2Ax%2B2=0
Text form: -px+r=-8*x-2 simplifies to -px+r+8*x+2=0
Cartoon (animation) form: simplify_cartoon%28+-px%2Br=-8%2Ax-2+%29
For tutors: simplify_cartoon( -px+r=-8*x-2 )
DETAILED EXPLANATION
Look at -px%2Br=highlight_red%28+-8%2Ax-2+%29.
Moved these terms to the left highlight_green%28+8%2Ax+%29,highlight_green%28+2+%29
It becomes -px%2Br%2Bhighlight_green%28+8%2Ax+%29%2Bhighlight_green%28+2+%29=0.
Result: -px%2Br%2B8%2Ax%2B2=0