JoseBruchez

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visits member for 1 year, 5 months
seen May 10 '13 at 14:18

May
7
accepted Can I get some assistance with this intregral / area problem?
May
7
comment Can I get some assistance with this intregral / area problem?
Thank you fgp, I did sketch it but I get slightly confused when interpreting areas/volumes. Out of curiosity, is there a way to do it without 2 integrals?
May
7
comment Can someone spot my error in the this question involving work done?
Should be 4000x. Wow, that one hurts! Thanks Alex
May
7
asked Can someone spot my error in the this question involving work done?
May
7
accepted What are the steps for finding consumer surplus based on x bar and the demand equation?
May
7
comment What are the steps for finding consumer surplus based on x bar and the demand equation?
Thank you Andre, you've made it very simple to understand this question. Superb explanation! Also, thanks for mentioning that this example is used solely because it is an application of the integral.
May
7
asked What are the steps for finding consumer surplus based on x bar and the demand equation?
May
7
comment Can I get some assistance with this intregral / area problem?
Sorry, I didn't realize that 'Washer Formula' wasn't universal. But you are correct in assuming that the above formula was what I was referring to. If I use that formula, I come up with: $\pi \int_0^{0.46} [(y=x)^2 - (y=cosx)^2] $ but I was told that this was the wrong formula :/
May
7
asked Can I get some assistance with this intregral / area problem?
May
7
accepted How do I proceed with this integral?
May
7
comment How do I proceed with this integral?
Oh, so I should have combined the $2$ and the $\frac{1}{5}$ prior to integrating that second term? Thanks for the clarification!
May
7
comment How do I proceed with this integral?
But if you integrate 2, isn't it 2x?
May
7
asked How do I proceed with this integral?
Mar
11
comment How do I set up this Newton's Method problem?
Sorry to bother you so long after this question, but I forgot to check my answer. Do these sound correct: L1 = 0.999702267 and L2 = 1.010078
Mar
11
comment How do I solve this problem with Trapezoidal Rule?
Thanks, I found my error. I came up with 47.01784*100
Mar
11
accepted How do I solve this problem with Trapezoidal Rule?
Mar
11
comment How do I solve this problem with Trapezoidal Rule?
Is there a way to tell when one can integrate explicitly? Like you said, they are obviously carefully made up problems when this happens but how did you tell right away that I didn't need to go the extra step?
Mar
11
awarded  Commentator
Mar
11
comment How do I solve this problem with Trapezoidal Rule?
So, after that I just integrate it from -20 to 20 using the Trapezoidal rule? That was a much easier problem than I originally thought it was. Being able to picture it correctly helped a lot.
Mar
8
asked How do I solve this problem with Trapezoidal Rule?