Tangent and NormalGeometrical Meaning of dy/dxEquation of Tangent and NormalTangent and Normal from an External PointLengths of Tangent, Normal, Subtangent and SubnormalDerivative as Rate of ChangeError and ApproximationMonotonicity of a FunctionApplication of Differentiation for Detecting Monotonicity Monotonicity of Function About a PointTest for Increasing and Decreasing Functions About a PointGlobal MaximumLocal MaximaGlobal MinimumLocal MinimaExtremaMaxima, Minima for Differentiable FunctionsStationary PointsFirst Derivative TestMaxima, Minima for Continuous FunctionsCritical PointsGlobal Extrema for Continuous FunctionsMaxima, Minima by Higher Order DerivativesSecond Derivative TestApplication of Maxima, MinimaUseful Formulae of Mensuration to RememberRolle’s TheoremAlgebraic Interpretation of Rolle’s TheoremLagrange’s Mean Value Theorem (LMVT)Geometrical Interpretation of LMVTTest Your KnowledgeAnswer Key Hints and Explanations