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Unformatted text preview: e 3 t/ 10 ) = V 3 (1 0) = V 3 . Thereore, we are looking or the moment t when I ( t ) = (0 . 9) I = (0 . 9) V/ 3. Solving yields . 9 V 3 = V 3 ( 1 e 3 t/ 10 ) e 3 t/ 10 = 0 . 1 t = 10 ln 0 . 1 3 7 . 68 . Thus it takes approximately 7 . 68 seconds or the electromagnet to reach 90% o its fnal value. EXERCISES 3.6: Improved Eulers Method, page 132 1. Given the step size h and considering equally spaced points we have x n +1 = x n + nh, n = 0 , 1 , 2 , . . . . 139...
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This note was uploaded on 03/29/2010 for the course MATH 54257 taught by Professor Hald,oh during the Spring '10 term at University of California, Berkeley.
 Spring '10
 Hald,OH
 Math, Differential Equations, Linear Algebra, Algebra, Equations

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