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anonymous
 5 years ago
how do you derive the derivative of cotx? I know how to do sin, cos, csc, sec, tan
anonymous
 5 years ago
how do you derive the derivative of cotx? I know how to do sin, cos, csc, sec, tan

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0d/dx (cotx) = csc^2(x)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0how do you derive it? I know what it is.

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0use u sub: u = Sinx du = Cosx

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh. My mistake. Well, one way would be to use the quotient rule. So cot(x) = cos(x)/sin(x). Taking the derivative of cos(x)/sin(x) using the quotient rule yields: [sin(x)[d/dx(cos(x)]  cos(x)[d/dx(sin(x))]]/sin^2(x)

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0rewrite Cot = Cos/Sin

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0please fan us both if we helped!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What identity does it become? Thats where i got confused in the quotient rule

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0Okay it becomes: Integral Cot = Integral Cos/Sin Let u = sin du = Cos dx Integral Cot = Integral du/u = Lnu + C = LnSin(x)+C

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0its calc 1, I havent done integrals yet

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0WOOPS LOL sorry i misread the question

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0Use Cot = Cos*(Sin)^(1) And use product rule

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0from where I left off: the top becomes sin^2(x)  cos^2(x) = 1 then the whole thing becomes 1/sin^2(x) = csc^2(x)

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0Or Cot = Cos/Sin and quotient rule

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0beautiful, thanks pyeh9

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0my professor wanted us to derive all identities so I was confused on that one for the exam tomorrow
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