13.下列何者為二階常微分方程式\([4x^2 \frac{d^2y}{dx^2} - 4x \frac{dy}{dx} - 5y = 0\)的解(c1,c2為任一實數(realvalues))?
(A)\(y = c_1 x^{\frac{5}{2}} + c_2 x^{\frac{1}{2}}\)
(B)\(y = c_1 x^{\frac{5}{2}} + c_2 x^{\frac{1}{2}}\)
(C)\(y = c_1 x^{\frac{5}{2}} + c_2 x^{\frac{1}{2}}\)
(D)\(y = c_1 x^{\frac{5}{2}} + c_2 x^{\frac{1}{2}}\)

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