This is my first year going to take AP exams... and the biology one worries me :(
I just went out and bought that Princeton Review book for the AP Bio exam. Any advice for it? :)
I can probably give you help on calculus, but I know close to nothing about biology :P .
Other than photo-something makes plants green.
Photosynthesis? xD
We're on the chain rule now... *doesn't get it* ._.
Depends, do you want a 12 year-old's suggestions? :P
Derivate of chain rule is simple as long as you understand it. Honestly, I still don't fully get the f o g (x) crap, I just think of it this way:
Say you have a function like sin(x^2).
Take the derivative of the OUTSIDE function.
The derivative of sin is cos.
Then take the derivate of the INSIDE function.
The derivative of x^2 is 2x.
The derivative of the whole thing is the derivative of the inside times the derivative of the outside with the inside. It's pretty confusing, so just read one line below.
The derivative of sin(x^2) is 2x times cos(x^2).
I probably did a bad job explaining, so look at these functions and their derivatives and see if you can make sense of my method.
f(x) = e^(2x)
f'(x) = 2e^(2x)
g(x) = tan(x^2 + 3)
g'(x) = 2x times [sec(x^2 + 3)]^2
Biology should be pretty fun to take. At least I think so. :P
Ask me about Germ theory, Cell division, Evolution, Natural Selection, the human body's organs/organ systems etc.
Oh yeah, take some of the quizzes on this site for some good practice. I don't know which textbook you use, but this is still a good link. :D
http://www.phschool.com/atschool/biology/D...S_BK_index.html
Let me give you a problem from my homework to solve since I don't get it:
x^2 * (x-2)^4
EDIT: Theo, that phschool thing is like the same thing my book uses I believe :P
I'm in multivariable calculus now (the thing that comes after Calc BC), and I'm taking linear algebra (the thing that comes after multivariable calculus) next semester. I took BC last year, I can help you if you have any problems.
As for bio ... dunno, I've always been a physics person myself.
As for your problem... it doesn't look too bad. Start by FOILing out the (x-2)^4, then multiply by the x^2. Should work out to something like x^2 (X^2 - 4x + 4) ^2. I can't go further in my head than that, just remember to multiply everything in the first bracket by everything in the second bracket.
Quote:Originally posted by yoshidude65@Oct 16 2005, 07:44 AM
Let me give you a problem from my homework to solve since I don't get it:
x^2 * (x-2)^4
EDIT: Theo, that phschool thing is like the same thing my book uses I believe :P
It's basically:
x^2(x-2)(x-2)(x-2)(x-2) :P
x^2(x^2-4x+4)(x-2)(x-2)
x^2(x^3-4x^2+4x) + (-2x^2+8x-8)(x-2)
x^2(x^3-6x^2+12x-8)(x-2)
I think you can figure it out on your own. Remember to always do the parenthesis first. B)
If you use the same type of site as me, then good! We have some common ground!
Do you need ANY help on Biology?
Quote:Originally posted by Ectoy2@Oct 16 2005, 09:03 AM
I'm in multivariable calculus now (the thing that comes after Calc BC), and I'm taking linear algebra (the thing that comes after multivariable calculus) next semester. I took BC last year, I can help you if you have any problems.
As for bio ... dunno, I've always been a physics person myself.
As for your problem... it doesn't look too bad. Start by FOILing out the (x-2)^4, then multiply by the x^2. Should work out to something like x^2 (X^2 - 4x + 4) ^2. I can't go further in my head than that, just remember to multiply everything in the first bracket by everything in the second bracket.
do my hw please :P .
um... calculate the curvature (kappa), normal acceleration, tangential acceleration and binormal vector of r(t) = <.5t^2, 5, 1/3t^3> at t = 2, and I'll help you out a bit. Don't forget, the normal vector can be particularly nasty to calculate... we compared answers in class (a couple friends and I), and none of us had the same thing.