F(xin)ڵλǣӰҕCˇ
֥ZՓӽQİ,"֥ZՓ"e?
2020-10-15 14:14ӰҕCˇ
e˕rg ӵwӵwsȑ(yng)ԓ_(d)߳l(f)֮c˕rѽ(jng)ǰһξx˱߿ǰD֥Zf@ӵՓd֮ ֥ZՓӽQİ...

e˕rg
ӵwӵwsȑ(yng)ԓ_(d)߳l(f)֮c˕rѽ(jng)ǰһξx˱߿ǰ
D֥Zf@ӵՓd֮СЦT¾@ՓÁЦ"(sh)W(xu)"Į_(d)˹" 1-0.999...>0"˼
Ȼ@ՓЦČW(xu)֥Z"1-0.999...=01-0.999...>0"˼֥Z@Փ^ЦTµ"1-0.999...=01-0.999...>0"˼
ϳȔ(sh)W(xu)ĽQkǏĽY(ji)^̵ġՓ߉]e֮cHh(yun)@֥Zc҂ȡ˲ͬĕrgϵy(tng)
˂(x)Tڌ\ӿrgBm(x)(sh)֥ZĽጄtȡxɢĕrgϵy(tng)oՓrggȡСrgSɟoĕrgcMɵQԒfBm(x)rgxɢrgrggȡoFСĘO
Mܿȥ҂Ҫ^1/21/41/8ȵȣh(yun)oFoM䌍rgDŽٵģ1/21/41/8룬rgԽԽȥoFoM䌍ֻǂ(sh)Ҳ1f֥ZՓDzڵġ
U(ku)չYϣ
ՓڱӛځʿµġW(xu)һж֪֥Z@ЩՓǞ֧ώTP(gun)ڡڡӡһČW(xu)f@ЩՓăɂǣ˹ܲ^͡wʸӡ
@Щe֣oޣĸ߀ǟoeֽQeԭڵǰǴڏVӣ磬ЏVӵľν(jng)^oָ߀ЏVӵľνMɟoVӵcMɡ֥ZՓмȳJ(rn)Vӣ֏(qing){(dio)oVӵc
@ЩՓ֮yԽQЏ(qing){(dio)ѿ٤ɣϞęC(j)еՓķc
YϣٶȰٿơ֥ZՓ
-ǸP(gun)֥ZՓĆ
һж?x)wY(ji)rg}簢˹ٶ10m/sٶ1m/sǰ100סǰ˹һ100/9(ni)Ϟ(j)Փ߉100/9ԟo(x)o҂һN҂ƺδ^ӡ
@һ룬҂Ҫ(jng)^ǰ1/2ǰһһ1/4룬һ1/8҂h(yun)һ(ni)oՓΕrgٶҲɟo(x)֡䌍҂ľh(yun)Ҳ^@1ˆ
@ȻǡMܿȥ҂Ҫ^1/21/41/8ȵh(yun)oFoM䌍rgDŽٵģ1/21/41/8rgԽԽȥoFoM䌍ֻǂ(sh)Ҳ1롣f֥ZՓDzڵ
U(ku)չY:
֥ZՓǹϣD(sh)W(xu)֥ZһϵP(gun)\ӵIJɷԵ܌W(xu)Փӵİl(f)F(xin)@ЩՓѽ(jng)õƵĽQ@ЩՓڱӛځʿµġW(xu)һж֪
֥Z@ЩՓǞ֧ώTP(gun)ڡڡӡһČW(xu)f@ЩՓăɂǣ˹ܲ^͡wʸӡ
@Щe֣oޣĸ߀ǟoeֽQeԭڵǰǴڏVӣЏVӵľν(jng)^oָ߀ЏVӵľνMɟoVӵcM֥ZՓмȳJ(rn)Vӣ֏(qing){(dio)oVӵc@ЩՓ֮yԽQЏ(qing){(dio)ѿ٤ɣϞęC(j)еՓķc
Y:ٶȰٿƣ֥ZՓ
ش𱻾W(wng)Ѳɼ{ 䌍҂(j)ЌW(xu)^ğoFfs(sh)֪Rֻһ̾ͿɶeƷ֥ZՓ˹10001+0.1+0.01+=1000(1+1/9)=10000/9˹ՓוrsϞ˂J(rn)锵(sh)1+0.1+0.01+h(yun)ҲܸFM@ֻ^һeX҂Ӌһ°˹܉Ϟ?sh)ĕrgt1+0.1+0.01+=t(1+1/9)=10t/9֥Zfİ˹Ϟ[rgС10t/9@һlڰ˹͞ڲ\ӵrgǛ]Ƶrgͻ10t/9@һlһͻ10t/9@һl˹˻^˞˂x(sh)1+0.1+0.01+h(yun)ҲܸFMļԻˣ]п]rg(sh)1+0.1+0.01+Ǻ_(d)ͳ^ (dng)挦@_ʼ˼һЩ}ĕrѽ(jng)_ʼо\\ӵĴԆ}ҪҲĵһ}Ͽ\ӵĴ@ȻȻ֥ZsԺεՓCC\ӲܴҲ@һՓʽCh(yun)ӛ֥ZǹϣDrڐW(xu)ɵҪɆT@W(xu)ɵĻ˼ǷJ(rn)F(xin)еκ\׃J(rn)ֻ挍ڵıF(xin)֥ZC^cһO(sh)ՓCw\дڵ˲y1.1 Ϟ֥ZՓC@ӵģϞȵ_(d)_ʼܵλ(dng)㵽_(d)_ʼܵλÕr@Εrgѽ(jng)ܵǰȥ(dng)ȥrRͬӵĆ}ԱҪܵ˿̵λãܵ˞ǰƄmȻȞܵÿ죬Ҳֻܰ^uƽ@ӵ^̌oεسF(xin)ÿһAΞǰ^o@oނAh(yun)ҲϞD1 Ϟҽ^Ϟ̲סҪqՈe֥ZM(jn)һՓC͟o_ʼ\fϞ㿴뵽_(d)_ʼܵλͱȵ_(d)@ξxc뵽_(d)@cֱȵ_(d)@һxc˵ȵ@һ^̿ԟoM(jn)ȥoɟoނ^㌍H϶ox_cǣҲS˳˼֮ǵM֥ZՓCҪҳՓCеĆ}sסHԏ֥ZՓԁ˂һֱԇDָеe`ȻֱȻ]һȫMĽ[] ֥ZՓ1һJ(rn)֥ZՓĂՓCMǶַ˹wʸӺ\ӈ֥ZȼٶrgͿgBm(x)2ٶ\Bm(x)C@NBm(x)\Dz֥ܵZ˃ɷNrǹwBm(x)\r̓ɂwBm(x)\rD2 ַڹwBm(x)\rһNַC֥ZJ(rn)飬κһwҪAc\ӵBcȵ_(d)ABcCҪ_(d)Ccֱȵ_(d)ACcDͬҪ_(d)Dcֱȵ_(d)ADcȵڕrgͿgBm(x)@һ^̿ԟoM(jn)ȥԓwH϶ox_Ac˹wBm(x)\DzܵġD3 ˹ڃɂwBm(x)\r֥ZһQ顰˹Cf˹Ϟȵ_(d)_ʼܵλ(dng)_(d)_ʼܵλÕr@Εrgѽ(jng)ܵǰȥˣ(dng)˹ȥrRͬӵĆ}ԱҪܵ˿̵λܵ˞ǰƄmȻ˹ȞܵÿҲֻܰ^uƽ@ӵ^̿ԟoεسF(xin)ÿһAΞǰ^ڰ˹o@oނAh(yun)ҲϞĶɂwBm(x)\ҲDzܵΣ֥ZٶrgͿgǷٶ\gC@Ng\ҲDzܵģ֥Zͬӿ˃ɷNrwg\r̓ɂwg\rD4 wʸӡڹwg\rˡwʸӡՓC3֥Zf\λõ׃wʸκһrgԪṛһλϣκΕrgԪṛλö]׃κһrgԪṛwʸDzӵģwʸDzӵD5 \ӈڃɂwg\r֥Zˡ\ӈՓCO(sh)ABCwwBCA\ӷ෴ÿһrgԪwBCA\һgԪһrgԪ^wBC֮gƄ˃ɂgԪĶwBCƄһgԪҪ낀rgԪwBAƄһgԪsҪһrgԪһrgԪڰ낀rgԪ@һY(ji)Փ@Dzģ˃ɂwg\ҲDzܵǵ֥ZĽY(ji)Փ@ȻDzÿѵ˶֪ȻՓCsһe`ʲôһO(sh)ǰCϞ?sh)@ЩO(sh)һ_֥ZļO(sh)rgͿgBm(x)\ҲBm(x)M@ЩO(sh)ƺ@ȻǬF(xin)ƌW(xu)sѽ(jng)ʾܿܲ_ˣ֥ZՓC]І}ô2000ǰѽ(jng)C˕rgg\ӲܶBm(x)@һ@˵ĽY(ji)Փȫ`҂ijR֥Zɹˆ҂فһľwՓCԿ֥ZՓCP(gun)IJ(rn)wo(jng)^oFc^(q)gBm(x)r\ӣĸ(j)м(x)zl(f)F(xin)]Уy@һlʮ@ҪM(jn)һfĹS҂ҲJ(rn)wo(jng)^oFc^(q)gϲgٸ߀놖֥Z@Ǟʲô(dng)Ȼ֥ZǟoشǾ҂һ@Ƿ_҂Ū塰ɡĺx^ɡָ^̵İl(f)ֻҪĕrg|(zh)ԕrgA(ch)ġ}ɞ飺wǷ܉ޕrg(ni)(jng)^gеğoFc^(q)g(j)rgͿgBm(x)ԼO(sh)ĿgПoFc^(q)gĕrgͬӺПoFr̻rg^(q)gγһһһ(yng)P(gun)ϵˣԭtwޕrg(ni)ğoFr̻rg^(q)gͨ^gеğoFc^(q)gĶwȻޕrg(ni)(jng)^gеğoFc^(q)gǣwǿԣBm(x)rУ(jng)^oFc^(q)g\ӵ֥Z(j)ƺ@_Ŀ䌍e`ģڏ(qing){(dio)gBm(x)Եͬrs˕rgBm(x)D6 Roۙ\ӡȻʲô҂һNXJ(rn)wo(jng)^oFc^(q)g@}Ҫ֥ZҲS@NX˂?yu)ՓCԻ҂ؑһ҂ͨoF^̵ע҂oFɕrDz֪XҪȥۙɣۙw(jng)^oFc^(q)gȻ҂ۙw(jng)^κһc^(q)gҪĕrgĶ҂oۙw(jng)^oFc^(q)g҂ۙҪoFLĕrg@KwԼ(jng)^oFc^(q)g҂]J(rn)oͨ^Rۙ^̌HҲoҵĸԴһһNؓ(f)صĸXɣ\ӆ}䌍yǵģЕrx𰸃Hһ֮b^ȥ˼͕P(gun)IǷԸһcrg˼⿂䐂֮ǰͬһNԵĽ(jng)vJ(rn)RԼɞһԵǻ۵F(xin)ڣһ_ŲԼϞĵףR1.3 \ӵ 1ԟoһW(xu)1/0=oԽM1СL01ҲͲ@dž}ڡCСLȣ(sh)W(xu)ԴĘģʽСL0.000.1ӽ1Ĕ(sh)0.999.91/3=0.333...30.999...9 =0.333...3+0.333...3+0.333...3= 1/3 + 1/3+ 1/3 = 10.999.9 10.000.110.999.9 1 1ʽ 0C 0.000.1СLȆλ 0fʲôLȲgڣrgֻ˵룿һLȲܶLǟo(sh)СL0.000...1MɵC0˹Bһo߳ȥ˵Ĺ̈(zh)Q@}e`ʲô^҂ǰһз挍أX(jng)f^̓҂ǰܸ֪һжɫ㡢ζ|Mɵ@˶҂^Xڿ^ĴڡN(yn)Կաf߀һ}Ԟ֥ZfһՓȻV˂@挍چ˽Ҫݚ㌦J(rn)֪ 1ԟoް딵(sh)W(xu)1/0=oԽM1СL01Ͳ@dž}CСLȣ(sh)W(xu)ԴĘģʽСL0.000.1ӽ1Ĕ(sh)0.999.91/3=0.333...30.999...9 =0.333...3+0.333...3+0.333...3= 1/3 + 1/3+ 1/3 = 10.999.9 10.000.110.999.9 1 1ʽ 0C 0.000.1СLȆλ 0fʲôLȲgrgڣֻ˵һLȲܶLǟo(sh)СL0.000...1MɵģC0˹Bһo߳ȥ˵Ĺ̈(zh)Q@}e`ʲô^҂ǰһз挍أX(jng)f^̓҂ǰܸ֪һжɫ㡢ζ|Mɵ@˶҂^Xڿ^ĴN(yn)Կաf߀һ}Ԟ֥ZfһՓȻV˂@挍چ˽Ҫݚ㌦J(rn)ֻ֪C_ @̲Փķg@Փe`֮̎gDzܟoBm(x)ָ Ҫ@}̫ЌW(xu)W(xu)ij͕ˣ涼DzBm(x)䌍ҲŸЮI(y)@}Ҳ(jng)_ ֥ZzenonʢڹԪǰ468꣩ǰTµČW(xu)ᘌW၆ɻԭ^J(rn)\ӿԵĂՓCĘOՓccfǰTW(xu)ffǞ˾So(h)T(qing){(dio)ȡijC^DڡTƪfqo(h)ǡ֮߀֮ԑyfJ(rn)Dz׃һôóﲻ\ӵĻևY(ji)ՓtfJ(rn)׃ôҲóﲻ\ӵĽY(ji)Փ@cǰìܵՓӻև֥ZՓĂһաַ\_(d)Ŀĵ֮ǰҪȫ̵12_(d)12֮̎ǰҪ12˷ָoFh(yun)Ҳ_(d)Ŀĵաِ͞ܡO(sh)Wƥِܹ܊ِ͞ܣһ·(dng)@·̕rǰһ·(dng)@һΕrǰһһһoFh(yun)ҲsϞ@Փf\]п֮աwʸӡwʸһΕrgͨ^һ·@һΕrgɱֳɟo(sh)rÿһrʸռ(j)һλoֹӵfͣv@·̵ĸͬλǏһλwһλաһĕrgһĕrgՓDʾA1 A2 A3 A4BB2 B3 B4C1 C2 C3 C4O(sh)Bcϵ\ٶͬABcϵеÿһִСͬôB1_(d)A4ĕrgcC1_(d)A1ĕrgBϵе\ӕrgCϵ\ӕrgһ루AֻƄ˃ɸfϵе\ӕrgBϵ\ӕrgһBƄĸߑ(yng)ԓȅsвeСһrgһrgՓĂՓǔ(sh)ΑͣՓփ(ni)ݿßoFՔ(sh)бʾ硰ַʾ112121212nnڅoFĔ(sh)mȻ(sh)W(xu)ӋĽY(ji)Ҳ@ʾ@ЩՓe`sǺԎqஔ(dng)̵܌W(xu)x\ӵĔ(sh)W(xu)ʹõe\㽨ڡOޡĻA(ch)֮OޡǡǡԳJ(rn)gԺBm(x)oԺԵĽy(tng)һ(sh)W(xu)s]лش@Щ܉y(tng)һ҂֮ԿáOޡf֥ZՓe`ֻ顰Oޡѽ(jng)A(y)O(sh)c֮෴ǰᡣfOޡĻA(ch)һ}(dng)(sh)W(xu)܌W(xu)е߉xOޡɱ߀ԭ̖߉ʽ҂ӵ߉ZԴ֥ZՓô֥ZՓʽͽ(f)sö֥Z^˼L(fng)״\ՓM(jn)Нy@ЩՓ˂(x)Ԟ鳣\^Bm(x)gࡢowͲֵìȻ܌W(xu)P(gun)һͶ׃׃֮gP(gun)ϵӑՓ֥ZՓ漰\ӌW(xu)J(rn)RS(sh)W(xu)߉W(xu)}ښvʷLõ˼ԱՓϵʿ֥ZqCĄ(chung)ʼ@еġTags֥ZՓ,"֥ZՓ"e?,֥Z