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andreascott
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What is the maximum or minimum value of the function? What is the range?
y = –2x^2 + 32x –12
 one year ago
 one year ago
andreascott Group Title
What is the maximum or minimum value of the function? What is the range? y = –2x^2 + 32x –12
 one year ago
 one year ago

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cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
find f'(x) and equate it to 0 solve for x
 one year ago

andreascott Group TitleBest ResponseYou've already chosen the best response.0
I don't understand that ?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
oh  i've assumed you know some calculus
 one year ago

andreascott Group TitleBest ResponseYou've already chosen the best response.0
Would it be like y=2(0)^2+32(0)12 ?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
no what you have there is the intercept on yaxis
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
you need to change it to the vertex form y = –2x^2 + 32x –12 = 2(x^2  16x + 6) = 2( x  8)^2 64 + 6) = 2[(x8)^2  58)] so the x coordinate at maximum = 8 a negative coefficient before x^3 means there is a maximum value
 one year ago

andreascott Group TitleBest ResponseYou've already chosen the best response.0
oh , but it says the maximum and range is only 116 . its either 116 or 116 ?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
at maximum the function has a value 2*58 = 116
 one year ago

andreascott Group TitleBest ResponseYou've already chosen the best response.0
ok , i see that . . .
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
the range is f(x)<= 116
 one year ago

andreascott Group TitleBest ResponseYou've already chosen the best response.0
less than or greater than ?
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
dw:1350681832911:dw
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
below the graph less or equal to 116
 one year ago

andreascott Group TitleBest ResponseYou've already chosen the best response.0
Thats what i thought it was (: . Thank you soo much for helping me ! (;
 one year ago
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