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Math Help - need help fast

  1. #1
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    Unhappy need help fast

    1. find three functions that reach a maximum value at (2,8) and a minimum value at (8,0) and meet the criteria shown below:
    a) the function is in the form y=k+A cos(Bx+C) with A>0
    b) the function is in the form y=K+A sin(Bx+C) with A<0
    c) the function is in the form y=K+A sin(Bx+C) with A>0 which has different period than the function given in parts a) and b).

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  2. #2
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    Quote Originally Posted by Mr. red View Post
    1. find three functions that reach a maximum value at (2,8) and a minimum value at (8,0) and meet the criteria shown below:
    a) the function is in the form y=k+A cos(Bx+C) with A>0
    b) the function is in the form y=K+A sin(Bx+C) with A<0
    c) the function is in the form y=K+A sin(Bx+C) with A>0 which has different period than the function given in parts a) and b).

    Median line is y = 4 (why?) => k = 4.
    Amplitude = (8 - 0)/2 = 4.
    Period/4 = 8 - 2 = 6 => period = 24. But period = 2pi/B => B = pi/12.

    Try drawing some graphs using the above and then figure out for each case what C (horizontal translation) needs to be and whether A is positive or negative .....
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  3. #3
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    i need the three functions i don't to graph this problem
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  4. #4
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    Quote Originally Posted by Mr. red View Post
    i need the three functions i don't to graph this problem
    You try drawing some graphs to help you understand how to get the functions.

    I have left you with two things to do and have suggested how to do them.

    I also suggest you go back and revise this work so you have a better grasp of the concepts.

    If you still have problems, show what you've tried and state where your trouble still is.
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