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Tìm các nghiệm của phương trình f'(x) = 0 để xác định cực trị.

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Apr 9, 2020 ... 2cos^2 (x) = √3 cos x divide both sides by 2. cos^2 (x) = (√3/2) cos x. cos^2 (x) - (√3/2) cos (x) = 0 factor as. cos (x) ( cos (x) - (√3/2) ) ... Jun 14, 2022 ... $$3\cos x - 2 = 0$$3cosx−2=0 and solve for $$x$$x. Add 2 to both sides to get $$3\cos x = 2$$3cosx=2. Divide both sides by 3 to isolate $$\cos x ... (d) cos2 x + 3 cosx = sin. 2 x − 2 for 0

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cos2x-3cosx+2=0


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