anonymous
  • anonymous
Identify the function f and the largest interval of form [0, a] on which the limit below represents a definite integral. http://i48.tinypic.com/9aslfo.jpg
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
please tell me you tried \(f(x)=\sqrt{49-x^2}\)
anonymous
  • anonymous
Of course i did
anonymous
  • anonymous
didn't work?

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anonymous
  • anonymous
oh damn, there is a 2 out there, isn't there
anonymous
  • anonymous
yeah and I tried it with the 2 as well
anonymous
  • anonymous
f(x)=sq(x(a-x))
anonymous
  • anonymous
i think it is \(f(x)=2\sqrt{49-x^2}\)
anonymous
  • anonymous
I tried that
anonymous
  • anonymous
integral is \[\sum_{i=1}^nf(x_i^*)\Delta x\]
anonymous
  • anonymous
then i am lost
anonymous
  • anonymous
oh maybe you were supposed to put in the interval as well
anonymous
  • anonymous
Maybe if I change the order to match that so that the 2 is the last part...I orignally wrote it 2*sqrt49-x^2
anonymous
  • anonymous
wow...yeah of course it accepted that and not the 2* one...thanks quys. I hate online hw
anonymous
  • anonymous
jesus
anonymous
  • anonymous
dx=a-0/n and max of a is 7 so dx=7/n so if deltax is i/n you can find the coefficient.
anonymous
  • anonymous
picky picky picky
anonymous
  • anonymous
indeed. XP

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