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Unformatted text preview: M408C Practice problems for Exam #3 Directions . Indicate the correct answer for each problem by filling in the appropriate space, as in (A) ( ) (C) (D) (E). 1) lim x 3 x + 4 x 2 + 2 = (A) 3. (B) 3 2 . (C) 9 2 . (D) 6. (E) 3 4 . 2) The pressure in a chemical reactor is given by p ( t ) = 4 t 1 + 2 t 2 , t 1. At what time does the maximum pressure occur? (A) 1. (B) 1 2 . (C) 1 2 2 . (D) 0. (E) 1 2 . 3) The set of all points where f ( x ) = 3 sin x + cos x , 0 x / 2 is decreasing is: (A) ( 4 , 2 ). (B) ( 6 , 3 ). (C) (0 , 2 ). (D) (0 , 6 ). (E) ( 3 , 2 ). 4) The radius of a balloon as a function of pressure is r ( p ) = radicalbig p 2 + 6 p, p 0. If p = 2 . 1 then, by linear approximation, r = (A) 4 1 10 . (B) 4 1 12 . (C) 4 1 8 . (D) 4 1 16 . (E) 4 1 6 . 5) Which of the following statements about f ( x ) = x 4 3 x 2 , < x < is false ?...
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This note was uploaded on 10/19/2010 for the course EE 306 taught by Professor Ambler during the Fall '07 term at University of Texas at Austin.
 Fall '07
 Ambler

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