Julia T. answered • 05/05/22
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Laura C.
asked • 05/05/22Please help me answer this calculus questions.
Determine the points on the curve y = 4x- tan x where slope of the tangent is 0 in the interval 0 ≤ x ≤ π.
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Set derivative to 0:
4-sec2x = 0
(1/cos2x) = 4
cos2x = 1/4 => cos x = ±1/2 => x= 30° or 150°.
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