I got one more differential eq. which I am unsure of.... Solution by undetermined coefficients: Find a (real) general solution. Which rule are you using? $\displaystyle y^{''}-y^{'}-2y=3e^{2x}$ Thanks!
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Originally Posted by ntfabolous I got one more differential eq. which I am unsure of.... Solution by undetermined coefficients: Find a (real) general solution. Which rule are you using? $\displaystyle y^{''}-y^{'}-2y=3e^{2x}$ Thanks! Since $\displaystyle y = a e^{2x}$ is part of the homogenous solution you must use a particular solution of the form $\displaystyle y_p = a x e^{2x}$.
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