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Find the equation of the line normal to f(x)= x -2x^3 at x=1
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Find the equation of the line normal to f(x)= x -2x^3 at x=1

User Meenxo
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1 - 6 {x}^(2) = 1 - 6 = - 5 \\ slope \: of \: normal = (1)/(5)

f(1) = 1 - 2 = - 1 \\ (1. \: \: - 1)

y + 1 = 3(x - 1)
User BobbyGopnik
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