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xdrgnh
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Homework Statement
http://www.math.poly.edu/courses/ma0914/past_exams/MA0922_Final_2000-12-13.pdf First problem on the exam
Homework Equations
I believe the answer should be a 3rd degree polynomial so Ax^3+Bx^2+Cx+D
The Attempt at a Solution
Ax^3+Cx
-8A-2C=0
8A+2C=0
-A-C=3
-4A=C
-A+4A=3A
A=1.
However that is impossible because A has to be negative for the 2nd derivative on the left side of the equation to be positive. Idk where I went wrong.
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