hw1_4_ans - Homework Assignment 3 Math 2171 - Differential...

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Unformatted text preview: Homework Assignment 3 Math 2171 - Differential Equations Sections 002 & 007, Spring 2008 Name: Due: Monday, 02/04/2008 ‘ 1: m3, page 41) Find an explicit general solution of the differential equation: 2% = ysin x. / mPB, page 41) Find an implicit general solution of the differential equation: 3433—: = (y4 + 1) cos 3:. 383‘ at "x d War“ “a a, £3 :: 06? 3L 1 40 ( @5, page 41) Find an explicit particular solution of the initial value problem: 1173-: — y = 290231, y(1) = 1, £1} 2 z amkle 7am? ; a +1)? :: 30401) 9L “WW V 7‘ V , :jJ-EKEAK :S&+Zl)dx\ a: élx’ew lw :, owing v w l a :1 ! 1 6mg +V&{~C. , ‘ , page 41) Find an explicit particular solution of the initial value problem: 5121 = 662$”, y(0) = 0. dx (Forage... 2t: _ 9%” W . r - 0 ' M a 5 gm: Em L36 “1 -—' l I I , 5. (P43, page 42) A pitcher of buttermilk initially at 25°C is to be cooled by setting it on the front porch, Where ‘ he temperature is 0°C. Suppose that the temperature of the buttermilk has dropped to 15°C after 20 min. hen will it be 5°C? ‘ J _ (0.0 m ‘S I (:3) ~; as ) ‘T ‘ ) ,— l 93; i: K" :9 3%: ’ V in T L— k‘ l: f (L $14th , C K17 ‘T 2 6/ “€69” v w: (my) -“ Aé :25 2) Man 6” k ST. 3 (We) -» gge‘fcl’wg :9 65%): :33" 4?” ,. 3 90$<2J2w% z) ;i£w? :3: 333.9 9:51} ’2?! m a‘ ‘ b" at T:§°C. :9 5 2215 (iowgq'z’gi’ x MelogfiLem/Kit: Q” (93’) / ...
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hw1_4_ans - Homework Assignment 3 Math 2171 - Differential...

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