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Find the equation of tangent to the curve x = Sin 3t, y = Cos 2t at t = π/4.
⇒ f(x1) < f(x2)
x1, x2ϵl
x1 < x2
Slope of tangent at ⇒ f(x1) ≥ f(x2) is x1, x2 ϵl