polar coordinate question help
Why do they not use the polar coordinate equation for this question for finding the area under a curve?
(edited 11 months ago)
Original post by mqb2766
Seems an obvious thing to do (polar integration), but youve not posted what they did so hard to comment.
This is the markscheme
Original post by action123
This is the markscheme
Looks like polar integration to me. What do you think theyve done?
Edit - Im "sure" last night your question was about polar integration, though youve edited it. If youre asking why theyve not transformed to cartesian coordinates then integrated, what do you think the cartesian equation would be? From a quick scribble its looking like a quartic in both variables (hidden quadratic) and not something that looks like its going to give easily. Doing polar integration seems as routine as you get.
(edited 11 months ago)
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