有关微积分1)单说第三问的R上热量,0-4s在R上的热量的问题,R=1欧,Q=R*t*I^2,用三角形面积s=0.5*底*高=0.5*I*t=0.5*0.8*4=1.6 Q=S*I(平均)=1.6*0.4=0.64J ,如此说来,第三问给的0.64J有何用?2)我们老师说这应
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![有关微积分1)单说第三问的R上热量,0-4s在R上的热量的问题,R=1欧,Q=R*t*I^2,用三角形面积s=0.5*底*高=0.5*I*t=0.5*0.8*4=1.6 Q=S*I(平均)=1.6*0.4=0.64J ,如此说来,第三问给的0.64J有何用?2)我们老师说这应](/uploads/image/z/4060000-64-0.jpg?t=%E6%9C%89%E5%85%B3%E5%BE%AE%E7%A7%AF%E5%88%861%EF%BC%89%E5%8D%95%E8%AF%B4%E7%AC%AC%E4%B8%89%E9%97%AE%E7%9A%84R%E4%B8%8A%E7%83%AD%E9%87%8F%2C0-4s%E5%9C%A8R%E4%B8%8A%E7%9A%84%E7%83%AD%E9%87%8F%E7%9A%84%E9%97%AE%E9%A2%98%2CR%3D1%E6%AC%A7%2CQ%3DR%2At%2AI%5E2%2C%E7%94%A8%E4%B8%89%E8%A7%92%E5%BD%A2%E9%9D%A2%E7%A7%AFs%3D0.5%2A%E5%BA%95%2A%E9%AB%98%3D0.5%2AI%2At%3D0.5%2A0.8%2A4%3D1.6+Q%3DS%2AI%EF%BC%88%E5%B9%B3%E5%9D%87%EF%BC%89%3D1.6%2A0.4%3D0.64J+%2C%E5%A6%82%E6%AD%A4%E8%AF%B4%E6%9D%A5%2C%E7%AC%AC%E4%B8%89%E9%97%AE%E7%BB%99%E7%9A%840.64J%E6%9C%89%E4%BD%95%E7%94%A8%3F2%29%E6%88%91%E4%BB%AC%E8%80%81%E5%B8%88%E8%AF%B4%E8%BF%99%E5%BA%94)
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