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Babynini
 one year ago
Equation for lower half of parabola.
Babynini
 one year ago
Equation for lower half of parabola.

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Babynini
 one year ago
Best ResponseYou've already chosen the best response.0Find an eq for the lower half of the parabola, without restriction. (y5)^2 = 4x2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it says for the lower half

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1It's a parabola opening to the RIGHT, ya? So if you drew it, you would see that it `fails the vertical line test`. We want to show that either branch of the parabola IS a function. So we'll end up with y=(plus/minus) squareroot(x stuff) and to get the LOWER Half of the parabola, we want the negative of that root.

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1Do you understand how to get it into the form y=stuff from what they've given you? :)

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0em i'm trying but i'm getting it wrong.

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1You ... you and your ways miriam _ ok let's see where we're going wrong,\[\Large\rm (y5)^2 = 4x2\]

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1square root as first step, ya?

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1\[\Large\rm y5=\pm\sqrt{4x2}\]Add some 5 business in there,\[\Large\rm y=\pm\sqrt{4x2}+5\]

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1We want the lower branch, ya? So we only want the negative root,\[\Large\rm y=\sqrt{4x2}+5\]

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0I was simplifying first and that was making it come out wrong

zepdrix
 one year ago
Best ResponseYou've already chosen the best response.1woops i buried the wrong solution in the picture _ hehe

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0aww lightbulbs stil haha

Babynini
 one year ago
Best ResponseYou've already chosen the best response.0it's ok, it's fabulous ;D
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