Find dy/dx and simplify your answers whenever possible:
1. y = sin(8x + 9)
2. y = tan2
(3x
2
)
3. y = cot(tan4x)
4. y = cos4x + cos
4
x
5. csc (
y
x
) = 5x − 2y
6. y = x
3
sec(x
3
)
7. y =
cos 7x
1+sin 7x
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