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anonymous
 5 years ago
how to find the minimum value of this quadratic equation?
anonymous
 5 years ago
how to find the minimum value of this quadratic equation?

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heisenberg
 5 years ago
Best ResponseYou've already chosen the best response.0which quadratic function would that be?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0C(x)=.045x^2110x+10000

heisenberg
 5 years ago
Best ResponseYou've already chosen the best response.0this seems like you'll want to use calculus. finding the max/min values using the first derivative test. do you know derivatives/calculus?

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0C' = 2 * 0.45x  110 = 0

heisenberg
 5 years ago
Best ResponseYou've already chosen the best response.0by taking the first derivative and setting it equal to 0 you can get the critical points

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.00.9x  110 = 0 .9x = 110

heisenberg
 5 years ago
Best ResponseYou've already chosen the best response.0these are points where the function is at a max or minimum. since it is a parabola there should be only one, and hopefully it is a min (a second derivative test could confirm this).

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0And basically whatever heisenberg said. Please fan us both if we helped. Thanks! =)

heisenberg
 5 years ago
Best ResponseYou've already chosen the best response.0bahrom is exactly right, but what you get from this is the x coordinate of the critical point (min or max value). since the question wants the actual value of the function, plug this x value in the original equation: C(122.22)

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0yup, good lol I missed the ending.. i just got back from college.. brains not functionin properly lol

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0what happened to 10000?? you just kick that off??

heisenberg
 5 years ago
Best ResponseYou've already chosen the best response.0when you take the derivative of a constant it is 0.
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