1. S

    reviewing for Finals and STUCK on this! It's not hard, just tricky

    Let F(x) = f(f(x)) and G(x)=(F(x))2 . You also know that f(9)=7, f(7)=3, f′(7)=5, f′(9)=7. Find F′(9)= find Find G′(9)= The answers are 35 and 210 The answers are right, but I don't remember how I got this right back when I did it weeks ago? Any...
  2. T

    Finals revew of functions

    I have my math finals next week and i still don't understand how to even start to do functions. These aren't even 1/4 of the problems on my review sheet. These are just the ones I don't remember how to start(Worried) Can some one please help me through these? Find g[h(x)] and h[g(x)] "I was...
  3. D

    I have my Algebra II finals next week, and I need help please!

    So my first essay problem is this: "As an enineer for a plastics company, you know that when a certain type of plastic is cut into sections, the length of each section determines the strength of the plastic. The function f(x)=x^4-4x^3+2x^2+4x-3 can describe the relative strenght of a...
  4. S

    please please help! i have finals tomorrow!

    well my question is how to calculate the area of the circle when its in a triangle and i only have the units for the triangle and not the circle. here is the actual problem: all the sides of the triangle is 8 units each. then there is a circle perfectly placed inside. and i need to find the...
  5. I

    graph functions

    ok, so i desperately need help on my final and i have lots of questions.. 1. write an equation of the line perpendicular to the graph of x=3 and passing through D(4,-1) 2. the graph of the equation y=x^2 -3 is symmetric with respect to which of the following? a. x axis b. y axis c. the...
  6. R

    lhospital (finals my brain is mush)

    Why can't I see this I don't know... lim( as x approaches pi/2 from the left) (secx - tanx) can't use math tags worth a damn. Im pretty sure this is lhospital's rule because just taking the limit gives me 1 + infinite which is not the correct answer, I converted with the natural log...
  7. A

    Central Limit Theorem

    I have been sick and have missed alot of school lately, which is really not okay because it gives me 7 days to catch up on all sorts of classes before finals. I completely missed the lectures over Central Limit Theorem, and so likewise, I don't understand what it is that I am supposed to be...
  8. D

    Change of tomorrow!

    Use the transformation: x = (u+v)/2 y = (v−u)/2 double integral bounded by R of: (x − y)(x + y)dxdy where R is the region bounded by the lines y = x + 2, y = x, y = −x + 2 and y = −x + 4. Again...its the bounds of the integral that are killing me. Thanks ahead of time my book is just terrible.
  9. D

    More Triple Integrals!!!!

    i have an idea on how to solve this problem, but it seems like itd be way too much work to even be possible... triple integral over R of dV / (x^2 + y^2 + z^2) where R is the region between: x^2 + y^2 + z^2 = 1 x^2 + y^2 + z^2 = 4 am i correct in thinking that first i have put convert to...
  10. D

    final tomorrow...triple integral help please!

    i need to find the volume between the paraboloid z= 4x^2 + 4y^2 and the plane z=4. im having troubles deciding which coordinates i should use, and what the boundaries would be.
  11. 3

    Finals. Quick polar questions

    Alright. Thank you very much for your help in advance. I went thru all these problems myself and had questions on these particular ones. They shouldn't be too bad. 1) Convert X^2-y^2=1 to Polar... .... so it will = (r^2)(cos^2theta) - (r^2)(sin^2theta) =1 r=...
  12. rIBBON:lacedx

    Finals question help! (calculus)

    Hi everyone, My Calculus teacher gave us some review sheets of what to expect on the final. I've narrowed it down to this question that I can't figure out no matter what. Can anyone help me? Here is the problem: Find the value of x where f(x)= x^2-3(x+2)^(1/2) has its absolute minimum...
  13. mattballer082

    finals on monday

    My geometry final is on monday, i will have a list of questions on all the problems i need help on probally tomorrow or saturday.. i hope someone will be avaliable to explain the problems to me!! :D