Monday, April 28, 2008

Set #1

Let's get straight to the questions.

5. I'm not able to come to a conclusion from the info given
21. Do you differentiate the unction and if so, what comes next?
23. I got (1/h) [ (-e^(-1)/2+(1/2e)]
28. The functions looks more like a parabola than a sphere- I'm not sure how they arrived at a volume here.
30. I anti-differentiated it to (e^(1+lnx))/(1/x) and then came to 16e-4e=12e.
35. I differentiated [(1/2)y(3^.5/2)y] and got 36(3)^.5
36. I differentiated x^2-kx from 2k to zero and got k^3=54.
37.For f'(g(0)), I got 11, so it already isn't working out for me.
38. Using the arc formula, I came to [(35-4x^2)/(36-4x^2)]^.5, which I should differentiate from three to zero, although the answer seems unlikely.
43. I don't see the connection between the antiderivative of x^2 and the limit above
45. We're not allowed to use calculator, so I'm further perplexed as to what they're trying to find.

Thanks for your help.
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4 comments:

MariaCJen said...

for #5, I'm not sure if we are supposed to do this problem because it has a sign over it?

for #21, i made y=4/x and y=x and i set them two equal to each other and found that they both share points at (0,0) and (2,2) and foudn the distance between those two points

for #28, I found what the formula would be and instead of just pi I made it two pi because you are finding the whole volume of the sphere

for #30, I made it (e^1)(e^lnx) which equals ex and I put the e outside of the integral and I just integrated the x part and when you plug the numbers in it comes out to be 6e

April 28, 2008 at 10:18 PM
Jennifer Oh said...

Yeah, I don't think we're supposed to do 5.

April 29, 2008 at 6:18 PM
Jennifer Oh said...
This comment has been removed by the author.
April 30, 2008 at 6:55 PM
Jennifer Oh said...

For 30, you need to split it into two parts. (e^1)(e^lnx) You should be able to integrate from there.

April 30, 2008 at 6:59 PM

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