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iwanttogotostanford
 one year ago
HEY NEED HELP ASAP PLEASE:
Using the completingthesquare method, find the vertex of the function f(x) = –2x^2 + 12x + 5 and indicate whether it is a minimum or a maximum and at what point.
Maximum at (–3, 5)
Minimum at (–3, 5)
Maximum at (3, 23)
Minimum at (3, 23)
iwanttogotostanford
 one year ago
HEY NEED HELP ASAP PLEASE: Using the completingthesquare method, find the vertex of the function f(x) = –2x^2 + 12x + 5 and indicate whether it is a minimum or a maximum and at what point. Maximum at (–3, 5) Minimum at (–3, 5) Maximum at (3, 23) Minimum at (3, 23)

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zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.1\(f(x)=ax^2+bx+c\\f(x)=a(x+\frac{b}{2a})^2+c\frac{b^2}{4a}\) Has vertex \((\frac{b}{2a}, c\frac{b^2}{4a})\) This is a maximum if \(a<0\) and a minimum if \(a>0\)

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0i am stuck between A and B

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.1Do you not understand something I wrote?

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0NO i am just stuck between answer A and B

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.1Show me your work. i.e. show me your vertex form.

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0i just want to know if i got it right and i am stuck between A and B!

Hero
 one year ago
Best ResponseYou've already chosen the best response.0For quadratic functions with the form f(x) = ax^2 +bx+c , if a is negative, then the function will have a maximum value at the vertex.

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.1that is not what we are here for.

zzr0ck3r
 one year ago
Best ResponseYou've already chosen the best response.1@hero must be on his phone, that took way to long and your just repeating :P

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Yeah, I don't have the best tools right now.

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0s o it is A?

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0i did the work but I'm just stuck between minimum and maximum which is A or B! p

Hero
 one year ago
Best ResponseYou've already chosen the best response.0We've given you enough info.

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0i don't know yet.

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0how do i tell between minimum and maximum

Hero
 one year ago
Best ResponseYou've already chosen the best response.0Read What I wrote about quadratic functions once more.

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0i did i still don't know A or B

Hero
 one year ago
Best ResponseYou've already chosen the best response.0This is similar to what happens when you give someone money, but they don't Know how to spend it.

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0who wouldn't know how to spend money

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0@mathway please help

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Have you found the vertex form?

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0well kind of, i am just stuck between a and B

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can you show me the steps you did?

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0i have it all written on paper i can't take a picture..

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You can select the Draw button to write your work.

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0well for my last step i Got A!! finally figured how to do it:)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So you will not show your work then? Okay.

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0no, i got the answer thanks anyways though! @mathway

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0All right, but I won't say if you're right or wrong.

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0i know I'm right so thank you though
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