已知有程序如下:clearsyms x ty=sin(x^2) cos(t)^2 exp(t)I=int(y,t)则该程序运行的结果是:A:x*(cos(t)^2 exp(t)) (2^(1/2)*pi^(1/2)*fresnels((2^(1/2)*x)/pi^(1/2)))/2B:t/2 sin(2*t)/4 exp(t) t*sin(x^2)C:y=sin(x^2) cos(t)^2 exp(t)D:exp(t) - 2*cos(t)*sin(t) 程序 结果是 已知 发布时间:2024-06-11 00:33:16