Finding the equation of a cubic from given information
one last question:
The graph of the function y = ax^3 + bx^2 + cx + d has a maximum turning point at (0,1) and a minimum turning point at (-2, -2). Find the values of the coefficients.
I managed to get c = 0 and 3a - b = 0, but thats it..help?
Last edited by mr fantastic; August 24th 2009 at 03:34 AM.
Reason: Moved from another thread
The graph of the function y = ax^3 + bx^2 + cx + d has a maximum turning point at (0,1) and a minimum turning point at (-2, -2). Find the values of the coefficients.
I managed to get c = 0 and 3a - b = 0, but thats it..help?
(0, 1) on curve: .... (1)
(-2, -2) on curve: .... (2)
.
when : .... (3)
when : .... (4)
Solve the above equations simultaneously for a, b, c and d.