## Fundamental methods of mathematical economicsIt has been twenty years since the last edition of this classic book. Kevin Wainwright (British Columbia University and Simon Fraser University), a long time user of the text, has executed the perfect revision: he has updated examples, applications and theory without changing the elegant, precise presentation style of Alpha Chiang. Readers will find the wait was worthwhile. |

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apply axis chain rule choice variables coefﬁcient column commodity concave constant constraint convex convex set curve deﬁned deﬁnite demand denoted determinant difference equation difference quotient differential equation discussion domain economic elements equation system equilibrium Example EXERCISE exogenous variables exponential function expression f x0 ﬁmction ﬁnd ﬁnding ﬁrst ﬁrst-order condition ﬁxed function f given graph identical implicit-function inequality input integral intertemporal equilibrium inverse inverse function isoquant Laplace expansion limit linear linearly independent logarithm mathematical matrix maximum minimum multiplication negative nonzero notation optimal ordered pairs output parameters partial derivatives path polynomial positive problem quadratic form quasiconcave quotient rate of growth real numbers respect result rule satisﬁed scalar second derivative second-order second-order condition slope solution values speciﬁc strictly substitution symbol theorem tion total derivative total differential vector write zero