Calculus Examples

$\frac{d^{4} y}{d x^{4}} - 7 \frac{d^{2} y}{d x^{2}} - 18 y = 0$

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$\frac{d^{4} y}{d x^{4}} - 7 \frac{d^{2} y}{d x^{2}} - 18 y = 0$