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e2_prac_F2007 - M408C Practice problems for Exam#2...

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M408C Practice problems for Exam #2 Directions . Circle the letter of the correct answer (only one) for each problem. 1) lim x →∞ radicalbig x 4 + 3 x 2 - x 2 = (A) 3 2 . (B) 1 3 . (C) 2 3 . (D) 3 4 . (E) 3 5 . 2) During a certain reaction the pressure in a chemical reactor is given by p ( t ) = 4 t - t, 0 t 9. At what time does the maximum pressure occur? (A) 3. (B) 4. (C) 5. (D) 6. (E) 9. 3) The set of all points where f ( x ) = x + cos( x ) , x ( - π, π ) is increasing is: 4) The radius of a balloon as a function of pressure is r ( p ) = radicalbig p 2 + 6 p, p 0. If p = 2 ± 0 . 1 then, by linear approximation, r = 5) Let f ( x ) = sin 2 ( x ) , x [0 , 2 π ]. Which of the following statements is false ?
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