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swin2013
 one year ago
Best ResponseYou've already chosen the best response.0The first question. Number 13 :(

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0Find two areas separately.

swin2013
 one year ago
Best ResponseYou've already chosen the best response.0yes but I get confused on putting the limits for integration. And is it better to integrate in terms of y?

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0y? You are crazy! Integrating in term of x is MUCH easier. Don't see what it has to do with limit, but you can just set up a integration like this: \[\int_{2}^{0}(2x^3 x^2 5x)  (x^2+3x)dx + \int_0^2 (x^2+3x)  (2x^3x^25x)dx\] See what I did here?

swin2013
 one year ago
Best ResponseYou've already chosen the best response.0oh ok. it's because integrating with y is easier with some areas. I don't know exactly when to integrate with y and x

geerky42
 one year ago
Best ResponseYou've already chosen the best response.0Well, if functions are used, then just use x. If at least one of the curve don't pass vertical test, then it is better to use y.
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