第30章 学好数学小窍门（2 / 2）
PmMvPJ2A4oKA44am6aa55L6b5buO5aWO5rSb562l6Yyu5YOQ5Zq85Imt54y876a55LaX5o+w5YqN5Yuc542G5ZGI5oy876eQ5YOQ5buO5YiF5ay75KC95JyA4pq875OB6bSv6L++5Iy874qN5bmC55S65I2J5oy877SX6baX5ryc54a65Iuc55C65pS55D5jPD5jLzydgOKCgOOnkOWtpemDkOW7juWIheWCpuWNuOSMvO+GuuS/pemcgOKavO+Tgem0r+iEmue3l+m3l+mOkOW2hOeMvO+8nOeAuOSQuuaUueSGuuSLnOeEmuext+axt+avmOaIheWTu+Wlr+WgvOWJnOaqj+U+Yzw+Yy88goDjjZPlsb3liLnkgLvkobLmiI/ltK/opZ3mlrvkua/ljLzvob/kjbjkob/krLvklrvkvJbms4fogoDjsrfljIDop7flgIrmj7DlhJrnpq3lsJXmoLnkpq3lq7rkhojlurrkibjkmbvngabos4Pmr5jmqo/llrvkPmM8PmMvPIKA46m+6K2I57q65KS45J+36KGy5oy875Gs54a65JGs55C65pS55D5jPD5jLzydgOKCgOOhv+SNuOS9g+mfmeimrOe5gueZqOaquOSAuOSRiOacgOKavO+TgemFheWloei7iOWLq+epteazlOehg+iEmue5vuiBl+Y+Yzw+Yy88nYDigbzvob/kjbjkvYPpl63lqrjkgLjkjLzvhJrnob/kmrzkjbjkvYPprLvkkYjmu63mk4nmr5jmsbDloL3kgoDjhrrktK/ojp7npYjlsbDljpDlpbvkjLzvna/ojafnmb/onYDmj4TmobLmmKLpm7XonqvnjLzvi6jnvq/opq3lp6TljK7lpq3lqoforbjknYjlhr3kPmM8PmMvPIKA442c5r2D6ay75JGI5qq45Jm/6Iy876665IK85pqk5Ymc5ouP5Yuc5rOl5aC95LSv6LSv6KW75K+P5Yy8752v6ISa57yA6ZuJ57mQ5ay75JGI5qic5YGm6LOD5p+c56C95J6u5baF5Yy874qV5Zub5YGA6JyA4pq875OB6bSv6JC65pS55JeR6J2h6ISa54O/5Yap5aOP5aaL6I6Q5baE54y877Sk5bmC54a65LmC54Sa57aE57q45KW75LG35rCd5rCF5T5jPD5jLzydgOKCgOO8gOmbiee5kOWonOWvmOaxsOWbm+WBgOiXvuWJp+ifueSRiOaMvO+5r+WcgOI+Yzw+Yy88goDjk4HptK/osJ3msIXll5HonaHoqbXms5TnoYPojLzvjpDljJnmio3lnYDigoDjvIDpm4nnuZDlqJzlnqXnkLrml77liafokYjmnIDiPmM8PmMvPJ2A4oKA46+85ay96KWA5out55GE6ISa54yH6aat5bCV5o+D5bGw5Ymn6J+E5oSa55GI5pm754KA44Sa552A5o+E5qGy5rqM5pe+5Ymn6JGI5oy875ii6Zu16J6r54e/6JqB5ZWv6J2w5Z+55Iy874a65JOB6aWf56245Jir6YKA45u16J6r55u65Jm/6JOB6aWf54245K245J2I5ZyA4pq875OB6ZSt54y877Sk5YeR5oa65IeR5pC65pS55D5jPD5jLzyCgOOlj+WGuuSOmuWAk+WPveSNuOSNv+WwneawheWEmueOkOWHv+iYu+mJsuY+Yzw+Yy88nYDin7zvp5DlurrkmoDprpnmm7rkmb/orLvkkYjmu4flk4nmp6Tln7HmpZ3mhrrkurjkr5jmsbDlvYPojbjkpa/ogbzvua/ljYnmrYjnnqvnt7XogLjkhZfnj7vnnqXnm7rko4Lpn7fou47ljo3lhbjmgYDjl4zllYfnsIjlgYDpnb/km7XonqvnsLXopY7mtJvnPmM8PmMvPJ+874qV5YOA6Jir6Yi55IC75Kq45KCK5YKP5Y6D6KqA5oSa57eg5pm/6KC95IG874qV5YGA6Z2/5LC16KWO5rSb54y875u16J6r56at5bCV5p6Q5ruO5Y245IuS5aC95Iy874a65Kat5bCV5qat5aek5aat5aqH6LGw5a245J2I5Yi55LmJ56C95Iy874qV5Zub5YGA6Iy876+Y5o245JyA4j5jPD5jLzymgOKmgOKPvOWsheWvp+eTveSBgOOvp+einemmreWonOWYv+iMvO+FueSNuOSwlea9h+Wmp+iljuaaiOWNieaPg+W9peWsu+SWu+SZgOW2l+aquOSjgumfvO+tuOSdiOU+Yzw+Yy88n7zvjYHpgLjkhrrkpq3lqofoi6jnvq/omrjkk7jkgKHnup/lpq3lp6TliormsbDlrbjknYjltoTnn6vnlrvkgoDjgLjkrKznp7rntLnlr5jmvYPpnL/ouLDmqbvnkIjmvq/omrjkk7jkkLrmlLnkqoDmvprpjLzvmbzkooLlvaXlPmM8PmMvPKaA4qaA4rem6Lib56Kd6aKd6bq65Kq45Im45D5jPD5jLzydgOKCgOOGuuSmuuW+mumwiOWNuOSJp+ifhOaxsOWRieaTi+aGleWEmue+mumAnOaMh+mRieaTi+aGm+m5guemreWNhuWMvO+GuuS9meeOmOaEvOWzg+adgOa0l+m6qeeGleWKiuaCpuWUr+aMvO+olOeJnOa0m+aquOSZv+g+Yzw+Yy88goDjs4PmnYDmpq3lsJXmhJrnubLnr7rnsq7okJ3mmZXmgLzli4vmmrzkmL/ogL7lgL7li6jnvq/om7rkiZzmirjkkb3nlLjkjIDogoDjjYHpgLjkhrrkpq3lqofovYPpi6jnvq/opq3lsJXmhJrnpq3lp6TliormirjkrJzmup/lkYjmta7mtpjprbjknYjlpbvkgInmPmM8PmMvPIKA45Cd5pmV5p+36Iuo576v6ISa56iU556u5Zqk5Yi+5ZCN6KiO5qC95Jm754uP5ZG954O/5a2D54mc5pq85LaE56qH6Iy8766X6buO5b6J5ruO5ZG954q45KWO5rSb57Gw5Yy874KH5o245Iuc57W/5YKm5qq45IC45IKA476a6Yi55KOC6YSa57OD5qy75KC95KGy5p+55J6u5baF5T5jPD5jLzyCgOObuuSZv+iVveSgh+W0l+m6qeeBgOOQnuaGiOWmreWwleaBgOO6ruiIkOWGm+mBgOOwleaju+Shsei9iuaMvO+wleaju+SngOa/uueCpuWUr+aCgOOKleWmreWqh+iZluaEteiWu+S2heW+ieaxsOWRiOa5luawnOWEmueCh+aNuOSLnOeMvO+KleW5r+WcgOI+Yzw+Yy88goDjpY/lhrrkrpfpj73kjbjkjb/lp6TlgYDoPmM8PmMvPJ2A4p+876eQ5b+l6Jy45ISa54yH6Yuo576v6Kat5aek5a+Y5r2D6bW/5YKm5pqk5Yi+5YyH6aat5ZGJ5pOL5p+874KH5ouc572D6KC95J+877mu5aeF5ZGJ5pOL5qat5aek5Ya65Kat5aqH6LGw5a245J2I5aC95Iy875C65pS55Iy876+Y5o245JyA4j5jPD5jLzyCgOOZnemJruWEmueqoOW+mumbuuSJnOauvuWlleeLuOSpieWqj+WMvO+DvuSDsOiGuuShsua0l+m2l+aAuOQ+Yzw+Yy88poDipoDin4TmhYPmhJrnjK/lsLjkpK3mgqbluoflsI7nqKHokLrmlLnkgafoobLmn7nkjLzvsYjni4HmiLDosYrooaDmhJrnopnppq3lupzml67noa7on7fokLrmlLnkg77kg7Dotq7lp6TlirjkqZfmr5jmlYDmqpPlPmM8PmMvPIKA44e/6Juy5oWF5YWD5p+E5qSt5oKm5ZC65pS55Ie/6IGn6KGy5p+c55i/6Iy877SX6baX5rS55aS45Ia65ISk5bib55Wk5Z2c5oyH6ZCt5b+I5rSX6YC45IyQ5aic5bau5aek5T5jPD5jLzyCgOOGkeWjj+Wqnueum+e6uuSJuOSpruifueSMvO+GuuSFg+aoiuW+mOaOmOaQuuaUueSMvO+2l+afguafhOaEmueRieaTi+amreWqh+iwiOWyrug+Yzw+Yy88nYDigoDjvZnnvZnnjpjmjpjml77li5zngLzlpYnlvYPpoIDphJ7mhJrngp3mjaTliZzmgInmiormvYPojLzvgIjllonlo6fotJfpuqnniormgLjkhrrkiZzmpYvmj4PlvaXlsbDltK/opa/olLrljLzvp5DltK/oiLnkmb/ojLzvua/ljbjkn7nkPmM8PmMvPKaA4qaA4rCj5YyS5YSa56iZ5ZC55Ja75LaF5a+Y5rGw5aS+54Ow6IyQ5Yy874u+5YuX5o+D5bGw5aS+56yc5rqf5T5jPD5jLzyCgOOQueSNk+WkuuSEmuePpeW5vOWim+WQueShoOamreWppOWjgumvmOaPg+WxsOW0l+m6qeeMvO+nkOW0r+iIueSZv+iCgOOCrem1geeEmue0l+m6qeewiOWJjeaVjea6oue+suelu+Svj+Wwleaju+SHv+iagOmUuOSMgOg+Yzw+Yy88goDjobHoua/lhJrnl67nr4/luqLnvrLnr5jmnq7ltoXljLzvtJfpuqnnirPnoajmhJrnrbjkiafotJvnoL3km7rko4LpsI7nkY/lmrzksbDlhrrkvaXlpq3lnJ7mgqblrLvkoL3kjLzvjr7niL7lhJrnn5znr5jmhJ7mk7vnkYnmk4vmsI7nkY/lmrzksbDljpDli7nkkYnmk4vmsJXmo7vksIjlpq3lia3nhr3kPmM8PmMvPIKA45e+5Ymn6I245Ji/6L2D6K+P5ay75KC95Kic5bCO54KA44uo576v6KiX6YC45ISa552A5o+E5omc5ri45Z6d6YKA44a65Ie/6Kat5aqH6LGw5ZmA5baX5oSa56245J2I5Yy876+X5ZyA4j5jPD5jLzydgOKfvO+GuuSHv+imreW9g+mgveS5ruWnheWEmuemreWRieaTi+aRp+esnOaRiOaJr+iKkeWliOWMvO+QuuaUueSMvO+vmOaNuOScgOI+Yzw+Yy88goDjlLDmo4/lhrrkhpjltpfmjJDljrnkoIflurrkqrjkibjkjIfppK7loq/lqa7ojLzvna/opY/lgLjkkLrmlLnkPmM8