Y = Sin X Cos X

question 44

Multiple Choice

y = sin x cos x. Find the formula for dy.

• A) dy = -sin x cos x dx
• B) dy = (-sin ²x + cos ²x) dx
• C) dy = -sin ²(x + dx) + cos ²(x + dx)
• D) dy = (-sin ²(x + dx) + cos ²(x + dx)) - (-sin ² x + cos ²x)
• E) dy = sin (x +dx) cos (x +dx) - sin x cos x

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