Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
andreascott
Group Title
What is the maximum or minimum value of the function? What is the range?
y = –2x^2 + 32x –12
 2 years ago
 2 years ago
andreascott Group Title
What is the maximum or minimum value of the function? What is the range? y = –2x^2 + 32x –12
 2 years ago
 2 years ago

This Question is Closed

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

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

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

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

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

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

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

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

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

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

cwrw238 Group TitleBest ResponseYou've already chosen the best response.3
below the graph less or equal to 116
 2 years 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 ! (;
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.