Show that the maximum displacement of e^-0.5t sin2t occurs when t = 1/2 tan^-1 (4)?

or:Show that the maximum displacement of e^-0.5t sin2t occurs when t = 1/2 tan^-1 (4)?

or:Show that the maximum displacement of e^-0.5t sin2t occurs when t = 1/2 tan^-1 (4)?

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