# Problem 2 -- Use equations in book errata.

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Professor Murray announced this in class on Monday: The equations in example 2.1 in A&M are incorrect and have been updated in the book errata. (For a link to the errata look at the menu on the top of the course webpage next to the link to the book webpage.) You will need to use these equations in HW4 prob 2, so make sure you use the equations listed on the errata and not those in the book.

Make sure you note that M_t is not the same as M (and J_t not equal to J). Expressions for M_t and J_t are given in the book.

--Mary Dunlop 16:25, 17 October 2006 (PDT)