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1.00pqpqq02.3.00ab?a+b=004.aa|a|005.10,023461230a+b=b+a(a+b)+c=a+(b+c)7.10ab?ab=118.1200301200003ab=ba(ab)c=a(bc)a(b+c)=ab+ac9.n10.1211.10a10n1a10n112.01.22.3.4.5.6.127.1.12.1a=ba+c=b+ca-c=b-c20a=bac=bcac=bcc03a=bb=a4a=bb=ca=c5a-b=c-da+d=c+b3.14.ax+by=ca0b05.6.7.121.2.3.4.1.2.3.4.1.aa00aaaa2.aaa300a33.4.10,02341.2.13.1aba+cb+ca-cb-c2abc0acbcacbc3abc0acbcacbc4abba5abbcac1.1aman=amnmn2amn=amnmn3abn=anbnn4aman=amna0mnmn1ppp2.1233.124.ab2=a22ab+b2abab=a2b25.6.12341.abbb0abab2.13.4.123455.1231.2.3.4.5.1535456.1237.1238.1.abab2.xyxy3.ppxyxyabppabpxyxyp4.xyaa0x+ayaa0x-aybb0xy+bbb0xy-b1.2.xyxyxyxx=ay=bbxa3.y=kx+bkbk0xyb=0yxy=kxk04.1k0yx2k0yx5.k01k0b02k0b03k0b0k01k0b02k0b03k0b06.y=kx+by0bby=kx+by7.y=kx+by=kxbb0b08.y=kx+bkbkbkb9.1.ABCABACBCABCABCABC2.3.ABCRtABC4.5.6.123180457.pqpqpqpqqp8.1.2.123.ABCDEFABCDEFABCDEF4.1SASSA2ASA3SSS4AAS5HL1.2.123.4.125.6.16027.126036048.309.121.1a2=aa02a^2=a=aa0a^2=a=-aa02.1a0b0ab=abab=aba0b02a0b0a=abab=aa0b03.124.1.2ax2+bx+c=0a0ax2abxbc2.123ax2+bx+c=0a0b2-4ac0X-bb2-4ac2ab2-4ac03.ax2+bx+c=0a0b2-4acb2-4acax2+bx+c=0a0=b2-4ac10X1-b+b2-4ac2a,X2-b-b2-4ac2a2=0X1=X2=b2a304.ax2+bx+c=0a0X1X2X1+X2=baX1X2=ca1.abca2+b2=c22.3.1.2.nn-2180n360n33.4.5.1236.123457.8.9.1210.123411.12.12313.123414.15.12316.1234517.18.12319.1.2.3.nn/4.5.6.nn1.y=ax2+bx+cabca0xx2.1y=ax2+bx+ca02y=ax+b2a2+4ac-b^24aa0y=ax-h2+ka03y=ax-x1x-x2a03.y=ax2+bx+cabca0a0a0x=b2ab2a4ac-b^24ax=b2ab2a4ac-b^24axb2ayxxb2ayxxb2ayxxb2ayxx=b2ay=4ac-b^24ax=b2ay=4ac-b^24a4.5.1y=ax2+bx+ca02y=ax-h2+ka3Xy=ax-x1x-x2a6.y=ax2+bx+cxX1X2ax2+bx+c=0ay=0y=ax2+bx+cax2+bx+c=0a1b2-4ac0x2b2-4ac0x3b2-4ac0x7.y=kxkky=xy=-x8.1k0yx2k0yx1.abcdabcdabcdab=cdabcdadbcabbcb2=acbac2.1abcdad=bcbd0ad=bcabcd2abcda+bbc+ddbd03a1b1a2b2anbnb1+b2++bn0a1+a2+?+anb1+b2+?+bna1b13.5-12ABP,AP2=ABBP4.5.6.123457.12348.A1B1P1ABP1AA1BB1PP1O2OA1OAOB1OBOP1OPkO1.RtABCAAtanAtanAabAAsinAsinAacAAcosAcosAbcAA2.hLiihLtanhLi3.304560sin122232cos322212tan3314.5.1.2.1801801233.3604.OPOOOPOOO212345.6.7.8.123909.10.12311.12.O1O2rRRrO1O2=d1dR+r2dR+r3R-rdR+r4dR-r5dR-rO1O2d=013.360n14.C=2rS=r215.C=n180S=nr^2360=12Cr16.LS=rLLr1.2.123.1231.2.AnAmmnAPAmn3.AmnnmnAppAPA=p