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differential-equations-quiz-02

# differential-equations-quiz-02 - b” 5 Math 3041.2 Quiz 2...

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Unformatted text preview: b” 5/ Math 3041.2 Quiz 2 2-8-08 Show all work. Credit will be given only on the basis of work shown. 1. Find the general solution of Z: + y= 2y—2 El} e‘x ' o‘X. 1 d s d? «.3, ">752” J 4x ( 4 3" A, l6 -2 X * CC 2. A40 gal tank contains 20 gal of pure water. A salt solutio' ’ ' 1t per gal 1s pumped into the tank at the rate of 4 gal per min, and the mixture is drained off at the rate of 3 gal per min. How much salt is in the tank in 10 min? 2a- 5 1%; - as; a:- w 0 5“”! "A, 23:4— ’27 ”(RE/(Jada ;> A (MW-1;) Q‘s-“E 3 I'F f4 4’;[(ag+¢) zjoar 2 7/2: (104)204 _ (204+) = 260%) +C /(w+4) 9c: Q(z:+t>+ 03'“ (7)3 (a 95(0)“) .‘jﬂfﬁfi ?€€3th(20+<>— ”52°52? , ,1. g2a++)3 Math 3041 2 Spring oé Quiz 2 x ( (a) 2a ::7 ' - a, if /Q. ...
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