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tati7149
11.10.2019 •
Mathematics
The curve y=p+qx-2x^2 passes through the point a ((7,6) and (-1,-2). how do i find what p and q are? i tried to differentiate to have one unknown variable, but that doesn't work. so how do i approach this the best way?
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Ответ:
The answer to your question is: p = 13 q = 13
Step-by-step explanation:
Obtain 2 equations where the unknown quantities are p and q.
A ( 7, 6)
B (-1, -2)
Equation 1 6 = p + 7q - 2(7)²
6 = p + 7q - 98
p + 7q = 104 (1)
Equation 2 -2 = p - q - 2(-1)²
-2 = p - q - 2
p - q = 2 - 2
p - q = 0 (2)
p = q
p + 7p = 104
8p = 104
p = 104/8
p = 13
q = 13
Ответ: