1. Give an example of a differential equation which is a (a) third-order, linear, constant-coefficient, homogeneous, ordinary differential equation. (b) fourth-order, linear, variable-coefficient, homogeneous, ordinary differential equation. (c) second-order, linear, non-homogeneous, ordinary differential equation. (d) fifth-order, nonlinear, ordinary differential equation. (f) second-order, partial differential equation.

Q: differential eq e4x +15x?

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