Completing square (Show Steps):

f(x) = -0.6 x^2+1.2 x+1.4
What is the Domain & Range?

Question

Completing square (Show Steps):

f(x) = -0.6 x^2+1.2 x+1.4
What is the Domain & Range?

anonymous · Answer

what is with you with these problems???

anonymous · Answer

lets to it the easy way

$$-\frac{b}{2a}=-\frac{1.2}{2\times -.6}=2$$ so you will have 
$$f(x)=-.6(x-2)^2+\text{something}$$ and that "something" is 
$$f(2)$$

saifoo.khan · Answer

f(x) = -(0.6) (x - 1)² + 2

saifoo.khan · Answer

that's the answer/

anonymous · Answer

oh cramp that is wrong! it is 
$$-\frac{b}{2a}=-\frac{1.2}{2\times -.6}=1$$

saifoo.khan · Answer

I didn't liked yesterday one, so made a new one! ;)

anonymous · Answer

yeah 1 ! my arithmetic is bad

anonymous · Answer

what is this ? and saifoo you asked a question?! i have only seen you answer them

anonymous · Answer

so it will be 
$$f(x)=-0.6(x-1)^2+\text { whatever } f(1) \text{ is}$$

saifoo.khan · Answer

haha violinplayer, i suck @ completing square.. so i asked for help! ;)

anonymous · Answer

oh

saifoo.khan · Answer

-0.6 x^2+1.2 x+1.4

$$-0.6(-1)^2 +1.2(-1) + 1.4$$
Like this?

anonymous · Answer

oh

anonymous · Answer

Did you just ask and answer your own problem?

saifoo.khan · Answer

haha, yea.