dsolve中如何将解中的分数变成小数
x(t) = -(619953552/5546455096091)*exp(-(4/5)*t)*sin((7/10)*sqrt(65)*t)*sqrt(65)+(377529030/60950056001)*exp(-(4/5)*t)*cos((7/10)*sqrt(65)*t)+(12240000/60950056001)*sin(50*t)-(377529030/60950056001)*cos(50*t)如何将这个解中的分数变成小数?
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