(13)--2.5 2.6一元函数微积分之客流量问题

uvuvuv)(uvuvuv)(uvdxuvvdxuvduuvudvfxdx()udvu(x)uvv(x)dxxex2edx2xdxexxxedxexxx2222duvuvdvuxxdexex2222edxxexdexedxxxxxCexCexexxx)1(udvuvduvvu、uvdxudvdxdvvcosxdx.x,2,cos2dvdxxxdxu,2sin2cos2coscos222xdxxxxxdxxdxx,u,sin,cosdvxdxd...