JoannaBlackwelder
  • JoannaBlackwelder
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
Mathematics
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SOLVED
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chestercat
  • chestercat
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JoannaBlackwelder
  • JoannaBlackwelder
@phi @IrishBoy123
ytrewqmiswi
  • ytrewqmiswi
draw graph e.e
JoannaBlackwelder
  • JoannaBlackwelder
I did that already.

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ytrewqmiswi
  • ytrewqmiswi
so u want another better method
JoannaBlackwelder
  • JoannaBlackwelder
That doesn't give the the total number of students.
JoannaBlackwelder
  • JoannaBlackwelder
@nincompoop
Hero
  • Hero
Use a TI Inspire CaIc to do it.
JoannaBlackwelder
  • JoannaBlackwelder
I don't have one. But what function do you use on it?
dumbcow
  • dumbcow
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
JoannaBlackwelder
  • JoannaBlackwelder
That's true, thanks. :-)
Hero
  • Hero
You have to graph it first, then Use the "sum" feature under Calculus

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