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hartnn Group TitleBest ResponseYou've already chosen the best response.1
put u= cos t du =... ?
 one year ago

jennychan12 Group TitleBest ResponseYou've already chosen the best response.1
du = sintdt
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
good, so your integral, 9 sec^2 (cos t) (sin t dt) becomes, integral 9 sec^2u du right ?
 one year ago

jennychan12 Group TitleBest ResponseYou've already chosen the best response.1
oh, i see now. thanks :)
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
cool, welcome ^_^
 one year ago
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