KnowraLinear approximationLinked fromLinked fromThe 7 pages that link to Linear approximation, each with the reason it gives.All 7Related 5Compared with 2Chain ruleRelated: Composing local linear approximations explains the multiplication of derivative factors.DifferentiabilityRelated: Differentiability guarantees that the approximation error is small relative to the input change.Tangent lineRelated: The tangent line supplies the simplest derivative-based estimate of nearby curve values.Differential calculusRelated: The derivative supplies the slope for this local estimate.Restoring forceRelated: Near stable equilibrium, many restoring forces are approximated as proportional to displacement.