1、120(560)1UR A11B11C01D1 22i2332izi A B C D 3ABCDEACEACEECA A24 B40 C60 D80 4PABC A1233PABABCBC1233PABABCD2133PABABC5a nnnS*2120nnnaaanN16182024aaa35S A140 B280 C70D420 6:aR221xay:|12xx D4 A1 B2 C3 72633.14Ssin150.2588 sin7.50.1305 A2.598 B3.106 C3.132 D3.142 14511(2)axxx2_ 15,x y222122211xymxymxymm_
2、 162cos0()()0 xxxf xx axxx()f xa_(17-2112221070)17ABCABCabc.1A 22aABC.182005 x 1 2 3 4 5 y10 15 19 23 28 1yx2200080 ybxa 1221niiiniix ynxybxnx 19ABCDEF2BCEFG HACBC/GHFABEDCFBCABBC.1BCFEEGH2ABCF22ABBCCFBADC.200abFFx1C2FlC,A BABMMlxyNPFMNOPN1S2S1210SSl2121f xxaxlng xxa aR 11ah xf xg x1eete 2f xg xa22xOy:xtlyattx.A21:8 cos120CBOA.1B2C 2l2C,M Na
