Isaac's Errata for 2nd edition of Klein's Mathematical Methods for Economics
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2nd Edition
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p. 113

        Problem 10 is poorly stated.  Here a_{ij} is the amount of
        input i needed to produce one unit of output j.  In the statement
        of the problem, w is initially the wage, but in the equation
        Aw=p, w becomes the factor price vector.  In the rest of the 
        problem you must choose between these definitions based on context.

p. 164, problem 6.3.4

        range -> domain (everywhere in the problem)

p. 225

        missing (1/n) before the summation sign

p. 369

        Issac Newton -> Isaac Newton

p. 433, question 13.2.2, first equation

        Y_t = I_t + C_t + TB_t -> Y_t = C_t + I + G + TB_t

p. 533, answer to 4.4.9

        incorrect answers

p. 533, answer to 5.1.5.b

        missing minus sign

p. 541, answer to 8.2.3.d

        answers are rounded to integer values

p. 541, answer to 8.4.3

        percentage changes were computed using
        the rounded values in the table and then rounded;
        better answers are 39.1304, 22.2222, 4.8913.

p. 559, answer to 13.2.5, first equation

        a -> 1