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swin2013Best ResponseYou've already chosen the best response.0
The first question. Number 13 :(
 one year ago

geerky42Best ResponseYou've already chosen the best response.0
Find two areas separately.
 one year ago

swin2013Best ResponseYou've already chosen the best response.0
yes but I get confused on putting the limits for integration. And is it better to integrate in terms of y?
 one year ago

geerky42Best ResponseYou've already chosen the best response.0
y? 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?
 one year ago

swin2013Best ResponseYou've already chosen the best response.0
oh ok. it's because integrating with y is easier with some areas. I don't know exactly when to integrate with y and x
 one year ago

geerky42Best ResponseYou've already chosen the best response.0
Well, 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.
 one year ago
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