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Seleccione la forma general de la solución PARIICULAR para la ecuación diferencial lineal no homogénea: \( y^{\prime \prime}-2 y^{\prime}+3 y=(1-x)^{2} \)

Ask by Turnbull Conner. in Ecuador
Dec 20,2024

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La solución particular es \( y_p = \frac{1}{3}x^2 - \frac{2}{9}x - \frac{1}{27} \).

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Para encontrar la solución particular de la ecuación diferencial no homogénea \( y^{\prime \prime}-2 y^{\prime}+3 y=(1-x)^{2} \), se emplea el método de coeficientes indeterminados. Dado que el lado derecho es un polinomio de grado 2, se propone una solución particular de la forma \( y_p = Ax^2 + Bx + C \), donde \( A \), \( B \) y \( C \) son coeficientes a determinar. Luego, se calculan las derivadas \( y'_p \) y \( y''_p \), se sustituyen en la ecuación original, y se igualan los coeficientes de términos semejantes para resolver el sistema y encontrar los valores de \( A \), \( B \), y \( C \). ¡Listo! La solución particular está al alcance.

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Explain why if a runner completes a \( 6.2-\mathrm{mi} \) race in 33 min , then he must have been running at exactly \( 11 \mathrm{mi} / \mathrm{hr} \) at least twice in the race. Assume the runner's speed at the finish line is zero. Select the correct choice and fill in the answer boxes to complete your choice. (Round to one decimal place as needed.) A. The average speed is \( \square \mathrm{mi} / \mathrm{hr} \). By the intermediate value theorem, the speed was exactly \( \square \mathrm{mi} / \mathrm{hr} \) at least twice. By MVT, all speeds between \( \square \) and \( \square \mathrm{mi} / \mathrm{hr} \) were reached. Because the initial and final speed was \( \square \mathrm{mi} / \mathrm{hr} \), the speed of \( 11 \mathrm{mi} / \mathrm{hr} \) was reached at least twice in the race. B. The average speed is \( \square \mathrm{mi} / \mathrm{hr} \). By MVT, the speed was exactly \( \square \mathrm{mi} / \mathrm{hr} \) at least twice. By the intermediate value theorem, the speed between \( \square \) and \( \square \mathrm{mi} / \mathrm{hr} \) was constant. Therefore, the speed of \( 11 \mathrm{mi} / \mathrm{hr} \) was reached at least twice in the race. C. The average speed is \( \square \mathrm{mi} / \mathrm{hr} \). By MVT, the speed was exactly \( \square \mathrm{mi} / \mathrm{hr} \) at least once. By the intermediate value theorem, all speeds between \( \square \) and \( \square \mathrm{mi} / \mathrm{hr} \) were reached. Because the initial and final speed was \( \square \mathrm{mi} / \mathrm{hr} \), the speed of \( 11 \mathrm{mi} / \mathrm{hr} \) was reached at least twice in the race.
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