The equation y=c₁e²x cos 3x + C₂ e²x sin 3x is a solution of what particular differential equation? a. y" - 4y +13y = 0 b. 2y+3y + 14 = 0 c. y" - 4y - 13-0 d. 2y" - 3y¹-14 = 0

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