Y′′+9y=sec(3x) Find A Particular Solution To The Differential Equation.
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Verifying a Solution to a Differential Equation
The final few pages of this class will be devoted to an introduction to differential equation. A differential equation is an equation (you will see an "=" sign) that has derivatives. Some examples are
y' + 3xy = sin x and x2y'' + 3xy' + 4y = 0
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