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terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.0Which incidentally, is also the derivative of tan²x, illustrating quite elegantly that two functions having the same derivative are not necessarily the same function :D

arifadli8
 one year ago
Best ResponseYou've already chosen the best response.0why u use chain rule not quotient rule????

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.0Many paths to the top of the mountain, Champ ;) Some of them steeper, or rockier than the others, but all having the same destination.

arifadli8
 one year ago
Best ResponseYou've already chosen the best response.0then how u get the tan x???

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.0Besides, using quotient rule will have you using chain rule anyway :D

terenzreignz
 one year ago
Best ResponseYou've already chosen the best response.0tan²x and sec²x have the same derivative, well, because... sec²x = tan²x + 1
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