Question: In problem 1-18, find Dxy. 1. y = 2 sin x + 3 cos x 2. y = sin2 x 3. y = sin2 x

In problem 1-18, find Dxy.
1. y = 2 sin x + 3 cos x
2. y = sin2 x
3. y = sin2 x + cos2 x
4. y = 1 - cos2 x
5. y = sec x = 1/cos x

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