Derivative of 9/(cos(x))

Derivative of 9/(cos(x)). Simple step by step solution, to learn. Simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

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Derivative of 9/(cos(x)): 


(9/cos(x))'

((9)'*cos(x)-(9*(cos(x))'))/((cos(x))^2)

(0*cos(x)-(9*(cos(x))'))/((cos(x))^2)

(0*cos(x)-(9*(-sin(x))))/((cos(x))^2)

(9*sin(x))/((cos(x))^2)

The calculation above is a derivative of the function f (x)

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