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Unformatted text preview: MA232 Fall 2008 Test 1 Practice Solutions September 5, 2008 1 Classification pg.62 #2: dependent variable is y, independent variable is t, 1st order. ODE, linear, variable coefficient equation, nonhomogeneous pg.62 #4: dependent variable is y, independent variable is t, 2nd order. ODE, linear, variable coefficient equation, nonhomogeneous pg.62 #6: dependent variable is y, independent variable is t, 3rd order. ODE, linear, constant coefficient equation, nonhomogeneous 2 Verification All solutions should satisfy their corresponding DE. The C's , given in the order of the listed problems (not including the summer test problem) are 6, 7, 1, and . 3 Direction Fields (pg.21) #17. D #19. B 4 Separation of Variables The answers are given in the order of the listed problems (not including the summer test problem): y=2ee
t 1 y= 2 (1 + e2t2 ) y= sin t 2 1 y=tet 2 1 y= 1t1t3 2 y=ln (3e2t  2) 2 ...
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 Spring '08
 Toland
 Equations, Vector Space, Partial differential equation

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