1、 () - 1-.2vh?isvh?imvhisim3b 45-11bzxisnisxflybbafefefl=-feabehvhxbfl=-ebeb fe?eeh?evh/l ehvhlfl?fe ?vh/l 1ldn is?ne 2 12 vh?ehl?ib1isb?rhs 3neddvhabisbrh?1ne=nerh?/? 4? n kh?rh/d?1/ned 553 vh?khisb 6khmv/ma?tkh, ?l(7) ?eivi(2)(5)(7)?kh?lis? 8 lviviiseivillnrhkhdkhddb2bcos?vh?khisbcos? (9)vh=0(2)vh=
2、khisbcos?khisb9isbvhvh3bisvh1 zky-hs(3) 2 ky-hc1 khn pnb vhimis 2b imb b1 2 khna. im0.8a-b b. c. is=2.00?10.00ma1.00mavh 1isvhk1(k1=vh/is) d. 6kh5n a. is=2.00?10.00ma1.00mavi4isvik2k2=is/vi b. khll8c. pnb? imb? isis? vhvhd. bisvhpnisvhb vhimis=10.00maim=100200?1000ma100mavh2im-vhimim-vh-3b ba. im010
3、00ma b. c. is=2.00?10.00ma1.00mavh1isvhk1(k1=vh/is)d. khk16b -bb ba. im=1000mais=10.00mavh b. 5mmvh3 c. vh6b-xbimis1khnisvhk1k1=9.9 6k1kh=47,3d=2m5n2bim=800ma b=k1/khb3 bb-xb4isvik2khll85vhim 2=10.00maim-vh, imim-vh-6vh 1v05a5bababv0v0?isvvvv0isis2- xiszbyyta-tb6 v? v?abveveib-veibvhib 3qyvhvnqbvhb
4、43xdt dxqzby-ta-tbvhqbbis isbim ?im?is vab1?vh?v0?ve?vn?vr ?im?is vab2?vh?v0?ve?vn?vr ?im?is vab3?vh?v0?ve?vn?vr ?im?is vab4?vh?v0?ve?vn?vr 1(vab1?vab2?vab3?vab4)?vh?ve 4-vevhisbvhve,ve, vhvh?ve?v1?v2?v3?v44vhvab1vab3vab2vab4(vab1?vab2?vab3?vab4)/4?(|vab1|?|vab2|?|vab3|?vab4|)/4 (1)1-2vhisvhimvhisbi
5、m 3b 4-vhisbimisbimv1v2v3v41+is +bv1 2+is -b v2 3-is -bv3 4-is +b v4vh?v1?v2?v3?v44vh1. vhis1isim0mv 2im =0.45aim(), isvh1vh-is1vh-is im =0.45a2vhim1is4.50ma2im2vh2 32imvh2vhim is =4.50ma1 2 1 2 3 1 - 2 3 4 -()1. -2. 3. 4. 1. 2. im=0maih=1.00ma2.00ma?10.00ma3. ihuhim=400ma,ih=1.00ma2.00ma?10.00ma1.0
6、ma 3.imuhih=8.00maim=100.0ma200.0ma?1000.0ma100.0ma 12(im=400ma)3(ih=8.00ma)1 im=002 3 1. 2. 3. imihimih4. 5. uh16. ihim()1. -2. 3. 4. 1. 2. im=0maih=1.00ma2.00ma?10.00ma3. ihuhim=400ma,ih=1.00ma2.00ma?10.00ma1.0ma 3.imuhih=8.00maim=100.0ma200.0ma?1000.0ma100.0ma 12(im=400ma)3(ih=8.00ma)1 im=002 3 1. 2. 3. imihimih4
