Originally posted by: TimMyMac
It looks like you are doing basic dirivitives. limit as X goes to 7 from what the questions says. Go into your text book and find the rate of change equation. It should look something like (f(x+h) - F(x)) / h. (where H = 0) You plug the equation that you have into that, reduce it till you can get rid of the X/0 and then plug in the 0 for h, reduce some more, and then plug in the 7 for x. That should do it.
Originally posted by: BlameCanada
This is something you should probably just get help on next time ur in class. This is very important in calculus and it's pretty hard to learn on the message board. We could give u an answer, but your better off learning how to do that.
Originally posted by: TimMyMac
ya, what ever the value that it gave you was. If your getting confused on that your going to have to talk to your professor, You need someone to explain the Algebra of it to you and that's hard to do over the internet. The idea is that your using the equation to find M (slope) like you would for a linear equation. But instead of using Y as your top values, your subbing in F(x) values instead (it's the same thing just a step back). The H is a modification to it that makes it easier to use. Do you remember Rise/Run? It's the same thing, your just finding it for a equation that has a ever changing slope. The equation that you get after all is said and done is the dirived equation that the Y values of it represent the slope of the original equation at that same X value. Talk to your professor and try some easier equations. That one's a toughy to start out with.
Originally posted by: bootymac
Originally posted by: nkgreen
you're just now getting to derivatives? how long have u been in school? we're doing antiderivatives now. i'm in first year cal, btw.
Here's the deal. The prof for our calc is some Chinese guy that doesn't know how to speak good english, and he can't teach for the life of him. I think our class is way behind everyone else, and we're still delaying assignments because our prof can't teach!
I'm definitely getting my money's worth here :roll: