JEE Main 2013 Mathematics question
If an equation of a tangent to the curve, y − cos(x + f), −1 − 1 ≤ x ≤ 1 + π, is x + 2y = k then k is equal to :
Answer: (4)
Solution
Taking the curve as (the standard form of this problem), differentiating gives . For the tangent $x
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