Differential equations : - ( Equation reducible to homogeneous equation ; Introduction ) - 20.

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Differential equation is a mathematical equation that relates some function with its derivatives. In applications usually represent physical quantities, the derivatives represent their rates of change, and the equation defines a relationship between the two.
Solution of differential equation : Any functional relation among the variables , free of the derivatives obtained therefrom , satisfy the given differential equation.
Equation reducible to homogeneous equation ; Solving problem .
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