Trigonometric EquationHard
Question
The equation of the normal to the curve y = x + sin x cos x at x = π/2 is-
Options
A.x = 2
B.x = π
C.x + π = 0
D.2x = π
Solution
y = x + sinx.cosx
y = x +
y′ = cos2x + 1
y′(π/2) = 0
x = π/2
y = x +
y′ = cos2x + 1
y′(π/2) = 0
x = π/2
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