Posted by Andres on Wednesday, October 12, 2011 at 7:10pm.
Determine the xvalue for each inflection point on the graph of the following function.
f(x)=3x^55x^480x^3+360x^2+1000x+850

Calc  Steve, Wednesday, October 12, 2011 at 7:58pm
inflection at y'' = 0
y' = 15x^4  20x^3  240x^2 + 720x + 1000
y'' = 60x^3  60x^2  480x + 720
so solve y'' = 0
x^3  x^2  8x + 12 = 0
(x2)(x2)(x+3) = 0
There you have the x values. I trust you can evaluate y(x) to get the rest.

Calc  Andres, Wednesday, October 12, 2011 at 8:01pm
so would the inflection point be x=3 because that's where it goes from decreasing to increasing

Calc  in the same class, Wednesday, October 12, 2011 at 9:56pm
yes
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