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Given 
f(x)=3csc(3x), find 
f^(')(x).
Answer: 
f^(')(x)=

Given f(x)=3csc(3x) f(x)=3 \csc (3 x) , find f(x) f^{\prime}(x) .\newlineAnswer: f(x)= f^{\prime}(x)=

Full solution

Q. Given f(x)=3csc(3x) f(x)=3 \csc (3 x) , find f(x) f^{\prime}(x) .\newlineAnswer: f(x)= f^{\prime}(x)=
  1. Given Function: We are given the function f(x)=3csc(3x)f(x) = 3\csc(3x) and we need to find its derivative f(x)f'(x). The csc(x)\csc(x) function is the reciprocal of the sin(x)\sin(x) function, so csc(x)=1sin(x)\csc(x) = \frac{1}{\sin(x)}. The derivative of csc(u)\csc(u) with respect to uu is csc(u)cot(u)-\csc(u)\cot(u), where cot(u)\cot(u) is the reciprocal of tan(u)\tan(u), or f(x)f'(x)00. We will use the chain rule to differentiate f(x)=3csc(3x)f(x) = 3\csc(3x), where the outer function is f(x)f'(x)22 and the inner function is f(x)f'(x)33.
  2. Derivative of Outer Function: First, let's find the derivative of the outer function with respect to uu, which is 3csc(u)3\csc(u). The derivative of csc(u)\csc(u) is csc(u)cot(u)-\csc(u)\cot(u), so the derivative of 3csc(u)3\csc(u) is 3csc(u)cot(u)-3\csc(u)\cot(u).
  3. Derivative of Inner Function: Next, we need to find the derivative of the inner function u=3xu = 3x with respect to xx. The derivative of 3x3x with respect to xx is 33.
  4. Apply Chain Rule: Now, we apply the chain rule, which states that the derivative of a composite function is the derivative of the outer function evaluated at the inner function, multiplied by the derivative of the inner function. Therefore, f(x)=3csc(3x)cot(3x)×3f'(x) = -3\csc(3x)\cot(3x) \times 3.
  5. Simplify Expression: Simplify the expression for f(x)f'(x) by multiplying the constants together. f(x)=9csc(3x)cot(3x)f'(x) = -9\csc(3x)\cot(3x).

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