Differential EquationHard
Question
Ley y = (A + B )e3x be a solution of the differential equation 
+ m 
+ ny = 0, m, n ∈ I, then -
+ m + ny = 0, m, n ∈ I, then -Options
A.m + n = 3
B.n2 - m2 = 64
C.m = - 6
D.n = 9
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