EM-Quiz2 - MATH 3321 Quiz 2 1 If 2 3 = 10 6 5 = 66 8 4 = 96...

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MATH 3321 Quiz 2 1/26/10 1. If 2 + 3 = 10 , 6+5=66 , 8 + 4 = 96, and 3 + 6 = 27, then 9 + 6 =??? (a) 122 (b) 108 (c) 135 (d) 152 (e) None of the above. 2. ± x 9 - x 2 dx = (a) sin - 1 ² x 3 ³ + C (b) (9 - x 2 ) 1 / 2 + C (c) x sin - 1 ² x 3 ³ + C (d) - 9 - x 2 + C (e) None of the above. 3. ± 1 e x + e - x dx = (a) tan - 1 ( e x )+ C (b) ln(1 + e x C (c) cosh x + C (d) ln(1 + e 2 x C (e) None of the above. 4. The differential equation which has y 3 = x + Ce 2 x as its general solution is: (a) y ± = 1 e 2 x (b) y ± = 1 - 2 x 3 y 2 (c) y ± = 3 y 2 - 1 e 2 x (d) y ± = 2 y 3 - 2 x +1 3 y 2 (e) None of the above. 1
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5. The differential equation which has y = C 1 e 2 x + C 2 e - x as its general solution is: (a) y ±± - y ± - 2 y =0 (b) y ±± - 3 y ± +2 y (c) y ± - 3 y (d) y ±± - 2 y ± + y (e) None of the above. 6. The values of λ such that y = e λx is a solution of y ±±± - 2 y ±± - 8 y ± are: (a) λ = - 4 , 2 (b) λ = - 2 , 0 , 4 (c) λ = - 2 , 4 (d) λ = - 4 , 0 , 2 (e) None of the above. 7. The values of λ such that y = x λ is a solution of x 2 y ±± - 2 xy ± - 10 y are: (a) λ
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This note was uploaded on 02/09/2011 for the course MATH 3321 taught by Professor Morgan during the Fall '08 term at University of Houston.

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EM-Quiz2 - MATH 3321 Quiz 2 1 If 2 3 = 10 6 5 = 66 8 4 = 96...

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