Yefim S. answered • 12/03/21

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v(t) = x'(t) = (4t + 5)cos(2t^{2} + 5t); a(t) = v'(t) = 4cos(2t^{2} + 5t) - (4t + 5)^{2}sin(2t^{2} + 5t).

a(2) = 4cos(18) - (13^{2})sin(18) = 129.56. Answer is e.