Compute Δy and dy for the given values of x and dx = Δx

[From: ] [author: ] [Date: 13-10-31] [Hit: ]

y = 2x - x^2

x = 2

Δx = -0.4

dy = 2dx + - 2xdx = -2dx = 0.8

y(at x =2) = 0
y(at x = 2-.4) = 0.64
delta y = 0.64

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