HW3 - Math1003 Algebra and Calculus Fall 2011 Homework-3 Due at 11:55pm HKT Name Hok Him LAM Augmented Matrices and Gauss-Jordan Elimination Express

HW3 - Math1003 Algebra and Calculus Fall 2011 Homework-3...

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Math1003 Algebra and Calculus, Fall 2011 Name: Hok Him LAM Homework-3 : Due 09/30/2014 at 11:55pm HKT Augmented Matrices and Gauss-Jordan Elimination Express systems of linear equations in terms of augmented matrices.Perform row operations to find the reduced form of an augmentedmatrix. Determine the solution of a system of linear equation by using thereduced form of its augmented matrix. Express the solution of a system of linear equations.Set up and solve systems of linear equations.Matrix Operations and InversesPerform basic operations on matrices.Find the inverses of matrices, if existing. 1.(2 pts)Kimmie wants to earn money by baking and selling cookies.She works up a business plan and finds her cost and revenuefunctions whose graphs are shown above in green and yellow,respectively.a) How many cookies must be produced and sold to breakeven? b) What is the dollar amount coming in and going out if Kim-mie just breaks even? Answer: c) Use the formulas to write Kimmie’s profit function,P(x),from producing and sellingxcookies.(NOTE: Profit = Revenue - Cost) Answer:

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