JoseBruchez
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 May7 accepted Can I get some assistance with this intregral / area problem? May7 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? May7 comment Can someone spot my error in the this question involving work done? Should be 4000x. Wow, that one hurts! Thanks Alex May7 asked Can someone spot my error in the this question involving work done? May7 accepted What are the steps for finding consumer surplus based on x bar and the demand equation? May7 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. May7 asked What are the steps for finding consumer surplus based on x bar and the demand equation? May7 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 :/ May7 asked Can I get some assistance with this intregral / area problem? May7 accepted How do I proceed with this integral? May7 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! May7 comment How do I proceed with this integral? But if you integrate 2, isn't it 2x? May7 asked How do I proceed with this integral? Mar11 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 Mar11 comment How do I solve this problem with Trapezoidal Rule? Thanks, I found my error. I came up with 47.01784*100 Mar11 accepted How do I solve this problem with Trapezoidal Rule? Mar11 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? Mar11 awarded Commentator Mar11 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. Mar8 asked How do I solve this problem with Trapezoidal Rule?