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initial value problems

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Solve the initial value problems;

1a) t(dy/dt) + 5y = 7t w/ y(1) = 3

1b) (dy/dt) + 0.1ty = 7t w/ y(0) = 4

1c) 11(t+1)(dy/dt) - 7y = 28t for t > -1 w/ y(0) = 20

1d) (dy/dt) + 2y = 25sin(t) + 30cos(t) y(0) = 1

1e) (dy/dt) + 5y = cos(4t) w/ y(0) = 0

1f) 9(dy/dt) + y = 18t w/ y(0) = 1 find y as a function of t

1g) Find the function satisfying the differential equation
f'(t) - f(t) = 4t w/ f(1) = -1

1h) Find the particular solution of the differential equation
(dy/dx) + ycos(x) = 6cos(x) w/ y(0) = 8

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This solution encompasses initial value problems.

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