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JoannaBlackwelder

  • one year ago

Can anyone tell me how to do part e without calculus? Thanks! A test is given to a large group of students. The results are given by the function f(x) = 4e^(−(x−5)^2) +3e^(−2(x−8)^2) where x is the score in tens (e.g., x =5.6 represents 56%) and f is in hundreds of students. f has domain 0 <x< 10. (a) How many students received a 73%? (b) What range of scores had more than 250 students receiving that score? (c) What is the most common score? (d) Find all local maxima and minima of this function. (e) How many students took this test?

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  1. JoannaBlackwelder
    • one year ago
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    @phi @IrishBoy123

  2. ytrewqmiswi
    • one year ago
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    draw graph e.e

  3. JoannaBlackwelder
    • one year ago
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    I did that already.

  4. ytrewqmiswi
    • one year ago
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    so u want another better method

  5. JoannaBlackwelder
    • one year ago
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    That doesn't give the the total number of students.

  6. JoannaBlackwelder
    • one year ago
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    @nincompoop

  7. Hero
    • one year ago
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    Use a TI Inspire CaIc to do it.

  8. JoannaBlackwelder
    • one year ago
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    I don't have one. But what function do you use on it?

  9. dumbcow
    • one year ago
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    estimate using midpoint rule use x-values of .5,1.5,2.5 ... 9.5 sum up resulting "f" values this will approximate the area under the curve which represents total num of students

  10. JoannaBlackwelder
    • one year ago
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    That's true, thanks. :-)

  11. Hero
    • one year ago
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    You have to graph it first, then Use the "sum" feature under Calculus

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spraguer (Moderator)
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