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kymber
Group Title
How to find the maximum or minimum value of a quadratic function?
 one year ago
 one year ago
kymber Group Title
How to find the maximum or minimum value of a quadratic function?
 one year ago
 one year ago

This Question is Closed

2le Group TitleBest ResponseYou've already chosen the best response.1
You look at the vertex. Are you at the calculus level or the algebra level?
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
see the sign of x^2 coeffecient
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
Algrebra II, year three in high school. It's the same as the vertex?
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
correct, vertex gives us max/min value. if x^2 coefficient is ve, its min if x^2 coefficient is +ve, its max
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
its the opposite actually. if x^2 coefficient is ve, its max if x^2 coefficient is +ve, its min
 one year ago

2le Group TitleBest ResponseYou've already chosen the best response.1
What @ganeshie8 said, that will tell you whether the parabola faces up or down. The point at the vertex will be a min or a max depending on that coefficient.
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
dw:1349465625929:dw
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
so we have minimum value there
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
So how do you find the value of it?
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
max/min value = f(b/2a)
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
actually it comes from the formula for vertex, vertex = (b/2a, f(b/2a))
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
for parabola f(x)= a x^2 + b x +c the x coordinate of the vertex is b/(2a)
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
Um, like this? dw:1349465829395:dw
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Given \[ax^2+bx+c=a(xh)^2+k\] The vertex is located at (h, k).
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
dw:1349465949629:dw
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
that gives the xcoordinate only, ycoordinate gives the max/min value.
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
coordinate is just a number i think
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
So how do I find the ycoordinate?
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
since you got, xcoordinate of vertex = b/2a = 5
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
put that x value = 5, in the quadratic, it gives u ycoordinate of vertex
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
notice in x^2 10x +25 b is 10 (negative 10) b/2a is +10/2*1= 10/2 = +5 use 5 for x in the equation to find the y value
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
I got it! Thanks guys \(\Large\ddot\smile\)
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
glad to hear friend :)
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
hopefully you got y=0 so the vertex is at (5,0) and the min value is 0
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
and hw do i get that
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
smiley..
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
Yep, I got 0. the smiley is \large\ddot\smile :P
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
\( \large\ddot\smile \) ah latex is beautifyul :)
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
Yes it is :D
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Thanks, @kymber for teaching us something. \[\large \ddot \smile\] Awesome.
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
Hehe \(\huge\ddot\smile\)
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
yeah , kymber also taught me to draw heart ♥ \(\huge \color{red}{♥}\)
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
\(\Huge\color{pink}{❥}\) Sideways!
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
i thought only AccessDenied is the latex guru... we have so many experts over here hmm :)
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
but thats cheating... thats not latex, u using unicode i guess
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
You're blowing my mind, @kymber !
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
Lol yeah.. it's not a \(\LaTeX\) command. Just alt codes :
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
still its cool :)
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
:) yea these things i can see also. but sometime back i tried to use crossed swords unicode, and it didnt show up in many browsers :( from then i stopped using unicode, not sure why only few unicode characters show up...
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
this one : http://www.fileformat.info/info/unicode/char/2694/index.htm see if u can get this here...
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
\(\Huge{⚔}\)
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
i see a box, what u see at ur end hmm
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
: I see the swords..
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
i see box also
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
What browser are you guys using?
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
chrome too
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
I'm using Mozilla :P
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
firefox ?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
letme login through mozilla
 one year ago

kymber Group TitleBest ResponseYou've already chosen the best response.4
Yeah. I switched to Chrome and it's a box. Use Mozilla! :P
 one year ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.2
mozilla wins !
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
what kind of black magic is this!
 one year ago

CliffSedge Group TitleBest ResponseYou've already chosen the best response.0
Firefox is simply superior . .
 one year ago
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