Math121SampleQuiz2

# Math121SampleQuiz2 - Math 121 Name QUIZ#2(SAMPLE QUESTIONS...

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Math 121 Name: ________________________ QUIZ #2 (SAMPLE QUESTIONS) Show all work, simplify as appropriate, and use “good form and procedure” (as in class). Box in your final answers; write units where appropriate! No notes or books allowed. PART 1 (NO CALCULATORS!) 1) Let fx x x () = + 4 1 2 . Find ¢ . Simplify your answer. (6 points) 2) Let fx x x () ( ) =+ 6 4 31 . Find ¢ . Simplify your answer. Do not expand out powers; for example, don't work out 4 x + . (6 points)

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3) Let yx = 3 . Find dy dx x 2 2 8 = . (9 points) 4) Let Cx () be a cost function, where x is the number of units produced. Find an expression for the marginal average cost function, and simplify as appropriate. Your answer will include and ¢ . (6 points)
5) Consider the graph of the function

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Math121SampleQuiz2 - Math 121 Name QUIZ#2(SAMPLE QUESTIONS...

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