Need some math help (parable)

[ndee]

y + 2ax + 2a = x^2 + 2x + 1

that's the equatation. I need to know the "peak" of this parable. I have the finals tomorrow and got some probs with parables. Anyone around who can help me out on this one?

Thanks

 

[XZeroII]

Pray

 

[KingNothing]

Originally posted by: XZeroII
Pray

Agreed, especially if you're referring to parabolas as "parables". Sorry I can't help more, but I'm done with calculus and I'm never going back. Never!!!

 

[eakers]

this reminds me of a joke:

One day, Jesus said to his disciples: "The Kingdom of Heaven is like 3x squared plus 8x minus 9."
A man who had just joined the disciples looked very confused and asked Peter: "What, on Earth, does he mean by that?"
Peter replied: "Don't worry - it's just another one of his parabolas."

 

[Calundronius]

Originally posted by: eakers
this reminds me of a joke:

One day, Jesus said to his disciples: "The Kingdom of Heaven is like 3x squared plus 8x minus 9."
A man who had just joined the disciples looked very confused and asked Peter: "What, on Earth, does he mean by that?"
Peter replied: "Don't worry - it's just another one of his parabolas."

That's a lot funnier than it should be!

 

[blahblah99]

What's a parable?

 

[Chaotic42]

Math parable?

"The Parable of the 7 and the 16"

One fateful night at the local club, a bunch of mathematical symbols and numbers were hanging out. As people often do at clubs, everyone was trying to hook up, if only for the night.

Numbers, signs, all of them mixing and mingling. It was fun for everyone, except for one number.

7 was getting tired of the crap. 16 always had a line of hotties behind him. Why couldn't 7?

7 asked 16, "Hey man, why do you always have all of the girls?"

16 said "You mean like 8, 4, and 2?"

"Yeah, 8, 4, and 2! I can only get one number!", exclaimed 7.

"Everyone can have 1, it takes a real number to get the hotties like 8" said 16, "You've got to expand your horizions."

"But I'm only divisible by 1 and myself. 1's just diseased, everyone has her, and I'm tired of just having my self" cried 7.

"That's just the way your are man. You're not divisible enough!", said 16.

7 left, married 1, and promptly had a bunch of kids. Some were deformed and irrational. She later took him onto the Jerry Springer Show and revealed that she was having an affair with 0.

The moral of the story?

If you wants a good time, yous gots ta be non-prime

 

[Mday]

solve for y = f(x)

find the zeros of f(x)... x^2 + (2-2a)x + (1-2a) = 0, solve for x= x1,x2

find the midpoint of x1, x2. call that x3

find f(x3) and you have a value call that y1.

the tip of this parabola would be (x3,y1)

--

what did i just do?

a negative parabola has a tip, and only a negative parabola has one, it's like a U upside-down. and it intersects any horizontal line at 2 distinct points below its tip. for simplicity, i let the x-axis be that horizontal line. by finding the midpoint of the intersects, you find the x coordinate of the peak. by finding f(x) for that midpoint, you find the y coordinate.

 

[ndee]

found out by myself *proud*

Had the test today and it was ok, I hope I have 30% right

 

[Instagib]

You mean the "vertex"