Math121SampleQuiz3

Math121SampleQuiz3 - Math 121 Name QUIZ#3(SAMPLE QUESTIONS...

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Math 121 Name: ________________________ QUIZ #3 (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. USE A SCIENTIFIC CALCULATOR! 1) For parts a) and b), sketch the graph of f . You must: • Find and label all critical points and inflection points (if any). • Classify all critical points as relative maximum points, relative minimum points, or neither. • Find the y -intercept. • Have your graph correctly show where f is increasing / decreasing, and where f is concave up / concave down. • Show all steps, as we have done in class. (44 points total) a) fx x x x () =+-+ 292 4 20 32 . (26 points) YOU MAY USE THE BACK OF THIS SHEET!
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1) cont.) YOU MAY USE THE NEXT SHEET!
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b) fx x () = 4 5 . (18 points) YOU MAY USE THE BACK OF THIS SHEET!
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2) Find the absolute maximum and absolute minimum values of fx x x () =-+ 21 2 5 2 on the interval 14 , [] . (8 points) 3) Your company sells TVs. Fixed costs are $2000. Each TV costs $100 to make. The price function is px x =- 1100 20 in dollars, where x is the number of
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This note was uploaded on 09/08/2011 for the course MATH 121 taught by Professor Staff during the Spring '11 term at Mesa CC.

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Math121SampleQuiz3 - Math 121 Name QUIZ#3(SAMPLE QUESTIONS...

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