x(1)=et,x(2)=etcost,x(3)=etsint在区间[-2pi,2pi]上是
x(1)=et,x(2)=etcost,x(3)=etsint在区间[-2pi,2pi]上是
1
x(1)=et,x(2)=etcost,x(3)=etsint在区间[-2pi,2pi]上是