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Math Help - Calculus AP Quesions

  1. #1
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    Post Calculus AP Quesions

    http://www.fcps.edu/WestfieldHS/acad...ap_calc_ab.pdf

    I need help on numbers 5, 13, 14, 15, 17, 32H, 41-46, 20

    Help is much appreciated
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  2. #2
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    Quote Originally Posted by Pinklink View Post
    http://www.fcps.edu/WestfieldHS/acad...ap_calc_ab.pdf

    I need help on numbers 5, 13, 14, 15, 17, 32H, 41-46, 20
    this is quite a list of laundry to be done ... what effort have you made on any of these review problems?

    please show some effort in order to get help.
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  3. #3
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    for 5. i ended up with (x (7x^3 -5x^2-37x-35))/(x^4+5x^2-6) = 0..but that doesn't seem right
    in 14 and 15 i don't know what the triangles mean
    I have never graphed functions with restrictions like in 16 and 17
    i think 13a. doesn't have a domain
    i don't know what the symbols in 41-43 stand for
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  4. #4
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    Quote Originally Posted by Pinklink View Post
    for 5. i ended up with (x (7x^3 -5x^2-37x-35))/(x^4+5x^2-6) = 0..but that doesn't seem right

    move the right fraction to the other side and cross-multiply ...

    you should get \textcolor{red}{7x^4 - 42x^2 - 35x = 0} after simplifying. you'll also get two nice solutions.


    in 14 and 15 i don't know what the triangles mean

    change \textcolor{red}{\Delta x} to \textcolor{red}{h} and work them.

    I have never graphed functions with restrictions like in 16 and 17

    #16 is a difference quotient ... note that \textcolor{red}{f(x+h) = \frac{1}{x+h}}

    #17 are piecewise functions ... graph each piece for the x-values given. you should have graphed these in precalculus.

    i think 13a. doesn't have a domain ... that is incorrect.

    \textcolor{red}{y = x^20} ... what values of x can you legally use?

    i don't know what the symbols in 41-43 stand for

    those are just piecewise functions like in #17 ... the bold garbage symbols are just that, garbage (big typos).
    ...
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