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giggles123
 3 years ago
Find the function f given that it satisfies f''(x)=36x^2+24x
and its graph has a horizontal tangent line at the point (0,1)
giggles123
 3 years ago
Find the function f given that it satisfies f''(x)=36x^2+24x and its graph has a horizontal tangent line at the point (0,1)

This Question is Closed

Tyler1992
 3 years ago
Best ResponseYou've already chosen the best response.1Find the antiderivative 2 times.. So first \[f \prime (x) = 12x^3 + 12x^2 + C\]

giggles123
 3 years ago
Best ResponseYou've already chosen the best response.0f''(x)=3x^4+4x^3+c then what?

Tyler1992
 3 years ago
Best ResponseYou've already chosen the best response.1\[f(x) = 3x^4 + 4x^3 + Cx + D\]

giggles123
 3 years ago
Best ResponseYou've already chosen the best response.0Question is how do I find D?

Tyler1992
 3 years ago
Best ResponseYou've already chosen the best response.1We need to find what Cx and what D is.. Im trying to think how to do that

Tyler1992
 3 years ago
Best ResponseYou've already chosen the best response.1Right which would make Cx = 1

Tyler1992
 3 years ago
Best ResponseYou've already chosen the best response.1So we have \[f(x) = 3x^4 + 4x^3 + x + D\]

Tyler1992
 3 years ago
Best ResponseYou've already chosen the best response.1I ment it would make C = 1.. not Cx

giggles123
 3 years ago
Best ResponseYou've already chosen the best response.0if you do that you graph does not have a horizontal tangent line at (0,1) So c=1

giggles123
 3 years ago
Best ResponseYou've already chosen the best response.0Thank you thou but I think I new how to do it.
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