1、625uHn2016ca)3K?7LK?8;:,A,O,VnO,$?31.(12)4limx0+?vuut1x+s1x+r1xvuut1xs1x+r1x?.2.(12)(a,b?,f(x)=1x(1 cosax),x 03(,+)S?,?.3.(12)O4limn1nnpn(n+1)(n+2)(2n 1).4.(12)?y=sinx,?xkn,0,?xn?Y5,m:a.115.(12)?a,b,?Z10 xa1(1 x)b1dx?5.6.(12)y?Xn=0?13n+1+13n+213n+3?u?.7.(13)?f(x)30,1Y,ylimnnZ10 xnf(x)dx=f(1).8.(13)y
2、f(x,y)=(x2+y2)sin1px2+y2,x2+y26=0,0,x2+y2=03(0,0)?Y?3,?3:(0,0)?Y,?f(x,y)3:(0,0)?.9.(13)(1)arctanxm?,.(2)|(1)y=4 43+45 +(1)n42n+1+.(3)|(2)?CqO?,I?,?L10m(mg,).1210.(13)?3,4/DSPy=Qx.yu(x,y)=Zxx0P(x,y)dx+Zyy0Q(x0,y)dy+CPdx+Qdy?,C=u(x0,y0).11.(13)Oe?-?x2a2+y2b2+z2c2?2=x2a2+y2b2?N.12.(13)?k,L-x2+xy+y2=r2,_?.I(r)=ILxdy ydx(x2+y2)k.limr+I(r).13
