Which of the following is a solution for the given differential equation? y'' + 36y = 0 a) y(x) = cos(6x) + 6 sin(6x) b) y(x) = sinh(3x) c) y(x) = 2 sin(3x) d) y(x) = cos(12x) - sin(12x) e) y(x) = ln(6x) f) None of the above.
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