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anonymous
 5 years ago
Find the points of inflection.
f(x) = 5x3 + 2x + 5
anonymous
 5 years ago
Find the points of inflection. f(x) = 5x3 + 2x + 5

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You start by taking the first derivative. \[f{\prime}(x)=15x ^{2}+2\] Then you solve it for zero. x^2=2/15 Then your answers should be points of inflection.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Isn't the first derivative 30x? so the point would be zero?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0No. You take the power off each x value and multiply it by the coefficient of x. Then you have to reduce the power of x by 1. Any constant just disappears
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