[求助] 求助：关于机械波的叠加公式推导 已有2人参与

3楼: Originally posted by feixiaolin at 2014-02-18 13:15:17
先展开
y1=m1*cos(wt)+m2*sin(wt)
y2=n1*cos(wt)+n2*sin(wt)
再合并
y1+y2=(m1+n1)*cos(wt)+(m2+n2)*sin(wt)
         =c1*cos(wt)+c2*sin(wt)
         =sqrt(c1^2+c2^2)*cos(wt-arctan(c2/c1))

2楼: Originally posted by 桔子糖 at 2014-02-18 13:14:20
嘎嘎 我想说 我不会