Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = cot(5x - 7)
A. y = 5u - 7; u = cot x; = - 5 cot x csc2 x
B. y = cot u; u = 5x - 7; = - 5 cot(5x - 7) csc(5x - 7)
C. y = cot u; u = 5x - 7; = - 5 csc2(5x - 7)
D. y = cot u; u = 5x - 7; = - csc2(5x - 7)
Answer: C
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