Math141FinalS11

Math141FinalS11 - Math 141 Name: _ FINAL (CHAPTERS 7, 8,...

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Math 141 Name: ________________________ FINAL (CHAPTERS 7, 8, AND 9) MATH 141 – SPRING 2011 – KUNIYUKI 250 POINTS TOTAL Show all work, simplify as appropriate, and use “good form and procedure” (as in class). Box in your final answers! No notes or books allowed. A scientific calculator is allowed. To maximize chances for partial credit, please be neat and indicate any elementary row operations (EROs) you use! Clarity is important. I might not grade “messes.” 1) Find the intersection point(s) of the graphs of 3 x 2 ± y = 0 and 5 x + y ± 2 = 0 in the usual xy -plane by solving a system, as we have done in class. Do not rely on graphing, “trial-and-error,” guessing, or point-plotting as a basis for your method. Show all work! Write all solutions as ordered pairs of the form x , y () . If there are none, write “NONE.” (14 points)
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2) Write the PFD (Partial Fraction Decomposition) for 3 x ± 13 x 2 ± 4 x + 4 . You must find the unknowns in the PFD Form. Show all work, as we have done in class! (17 points)
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3) Write the PFD (Partial Fraction Decomposition) Form for 1 x 2 x 2 + 9 () 3 . Do not find the unknowns ( A , B , etc.). (7 points) 4) Let A = 1030 0140 0001 ± ² ³ ³ ³ ´ µ . Let B = 1020 0100 0010 ± ² ³ ³ ³ ´ µ .
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This note was uploaded on 09/08/2011 for the course MATH 141 taught by Professor Staff during the Fall '11 term at Mesa CC.

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Math141FinalS11 - Math 141 Name: _ FINAL (CHAPTERS 7, 8,...

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