Which relationship shows a quadratic variation

Question

ms-brains · Answer

attachment

kayders1997 · Answer

Idk if I can help you on this one :(

ms-brains · Answer

:( Awe man.

kayders1997 · Answer

Sorry :(

anonymous · Answer

A or C I guess

ms-brains · Answer

I got no clue on how to solve this..so anyone wanna explain?

mathmale · Answer

First of all, Ms-Brains, please explain in your own words what "quadratic variation" means.  We must agree on such an explanation before any problem solving effort begins.

mathmale · Answer

Perhaps you remember what "direct variation" means.  If so, explain that in your own words.   Then move on to explaining "quadratic variation" similarly.

ms-brains · Answer

Quadratic variation is is a relationship where two items, f(x), and x have a exponential relationship...

mathmale · Answer

Despite similarities, "exponential variation" and "quadratic variation" are decidedly different.

mathmale · Answer

Here's an example of "exponential variation:"$$y=ae^x$$

mathmale · Answer

This does not represent "quadratic variation," or, if it does, it's rare that you see the name "exponential variation" applied.  

Mind trying again?  Where have you seen the adjective "quadratic" before, and what does it signify?

ms-brains · Answer

I actually have to go right, but I'll be back later to finish this. I'm super sorry! I've soccer practice in 5 mins. Thanks so much for helping this much!