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С(sh)W(xu)ؿ}

r(sh)g2024-08-06 21:10:30 С ҪͶ
  • P(gun)]

С(sh)W(xu)ؿ}ͅR

г̆(wn)}СԇСW(xu)ĴِĴ}֮һ(Ӌ(j)(sh)Փ׺Ρг)w}׃ӣγ10N}и(du)(d)صĽ}

С(sh)W(xu)ؿ}ͅR

С(sh)W(xu)ؿ} ƪ1

һһ׷(wn)}

һ˻߶˕r(sh)(ͬr(sh)r(sh))(ͬء)(ͬ)ĕr(sh)g;xȗlϳF(xin)г̆(wn)}ڱِдF(xin)sռ80%h쾚(yng)Ø(bio)(zhn)ⷨs=vtY(ji)Ϙ(bio)(zhn)ήD()ֻõ׷ĻʽɽQڽ}ĕr(sh)һF(xin)^r׃r(sh)Y(ji)ԼĈDֶȥr

(f)s׷(wn)}

(1)׷(wn)}һ׷(wn)}һ(g)\(yn)(dng)(du)һ҂׷(wn)}}˼·ȫһӣֻ(du)(f)sc(din)P(gun)Iǘ(bio)(zhn)Dܷߵ\(yn)(dng)B(ti)

(2)׷(wn)}ɂ(g)һ·ͬr(sh)ͬػͬr(sh)ط(f)׷׷Q(f)v͆(wn)}֞(bio)(zhn)(֪ɵؾx̓ٶn׷c(din)ضc(din)ľxҎ(gu)r(sh)g(ni)׷Δ(sh))ͼچ(wn)}(Ҋ(jin)֪ٶȣһ(g)ں߶صʼc(din)r(sh)׷ĴΔ(sh))

(bio)(zhn)ͽ̶ⷨ܏·(hu)ܷһ_(ki)ʼλ׷r(sh)gķxʹΔ(sh)׵ö۾ʾDֻܴЂ(g)J(rn)R(sh)o(w)wóǷǿԇr(sh)gм(x)(bio)(zhn)ߴD

һõĕr(sh)gʽ(ֻeҏăɶͬr(sh)l(f)rͬһ˳l(f)rҊ(jin)Բ٘)

γr(sh)gtγ=s/(v+v)

γ׷r(sh)gtγ׷=s/(v-v)

nr(sh)gtn= tγ(2n-1)

m׷r(sh)gtm= tγ׷(2m-1)

޶r(sh)g(ni)Δ(sh)NΔ(sh)=[ (tn+ tγ)/2 tγ]

޶r(sh)g(ni)׷Δ(sh)M׷Δ(sh)=[ (tm+ tγ׷)/2 tγ׷]

ע[]ȡ̖(ho)

֮xȡ׻ҁ(li)оP(gun)·̵P(gun)ϵ漰چ(wn)}Ҫע⣬Ҫ\(yn)(dng)e(cu)

(jin)}҃܇ͬr(sh)Aسl(f)300ǧ׵ABɵ֮g֪܇ٶÿСr(sh)30ǧ܇ٶÿСr(sh)20ǧ 

(wn)(1)ڶӭֽ(jng)^(gu)L(zhng)r(sh)gס׷?(2)r(sh)xc(din)ǧ?(3)50Сr(sh)(ni)҃܇ӭٴ?

܇(wn)}

c(din)o(w)漰܇L(zhng)(du)С}ͷ֞飺

1܇^(gu)()һ(g)L(zhng)ٶȣһ(g)L(zhng)](mi)ٶ

ⷨ܇܇L(zhng)+()L(zhng)(·) =܇ٶȡͨ^(gu)ĕr(sh)g;

2܇+(sh)(늾U)һ(g)L(zhng)ٶһ(g)](mi)L(zhng)](mi)ٶ

ⷨ܇܇L(zhng)(·)=܇ٶȡͨ^(gu)r(sh)g;

3܇+ˣһ(g)L(zhng)ٶһ(g)](mi)L(zhng)ȡٶ

(1)܇+ӭߵˣஔ(dng)(wn)}

ⷨ܇܇L(zhng)(·) =(܇ٶ+˵ٶ)ӭe(cu)^(gu)ĕr(sh)g;

(2)܇+ͬߵˣஔ(dng)׷(wn)}

ⷨ܇܇L(zhng)(·) =(܇ٶ-˵ٶ) ׷ĕr(sh)g;

(3)܇+ڻ܇ϵˣ܇c˵׷(wn)}

ⷨ܇܇L(zhng)(·) =(܇ٶȡ˵ٶ) ӭe(cu)^(gu)ĕr(sh)g(׷ĕr(sh)g);

4܇+܇һ(g)L(zhng)ٶһ(g)ҲL(zhng)ȡٶ

(1)e(cu)܇(wn)}ஔ(dng)(wn)}

ⷨ܇܇L(zhng)+܇܇L(zhng)(·) =(܇ٶ+܇ٶ) e(cu)܇r(sh)g;

(2)܇(wn)}ஔ(dng)׷(wn)}

ⷨ܇܇L(zhng)+܇܇L(zhng)(·) =(܇ٶ-܇ٶ) e(cu)܇r(sh)g;

(du)ڻ܇^(gu)܇܇׷Լ܇ͻ܇֮g׷ȵ@׷N͵}Ŀڷ}Ŀĕr(sh)һýY(ji)D(li)M(jn)С

ˮд(wn)}

(du)ٶˮд(wn)}ҲͲyӛס1(g)ʽ

?bio)?oˮ+ˮٶȣͿ현(sh)ƌ(do)ʽ

ˮ=oˮ-ˮٶ

oˮ=(?bio)?ˮ)2

ˮٶ=(?bio)?ˮ )2

ԽY(ji)Փ£

(1)׷ˮٶȌ(du)׷ĕr(sh)g](mi)Ӱ(du)o(w)Փͬ߀ăɴٶȲ(gu)ɡ{đʹÞơ

2)ˮƯٶ=ˮٶt1= t2(t1ﵽl(f)F(xin)ĕr(sh)gt2İl(f)F(xin)ʰĕr(sh)g)cˮПo(w)P(gun)˽Y(ji)Փ(li)ĕr(sh)gʽdz׵ĽQˮ(wn)}䱾Ҳdzӛ

}һlмס҃ɂ(g)a^״a^Ҵa^`50ǧ̎һҿʹһ؛քeļ҃ɴa^ͬr(sh)l(f)ɴoˮٶͬ ʹl(f)r(sh)һƷĴˮ10犺Ʒʹ5ǧסʹ20ǧ׺^׷sƷ׷ϕr(sh)ǡú؛ˮٶ

塢gl(f)܇(wn)}

g@yC^(gu)̌(du)ٽ}](mi)Ўһ3(g)ʽһ㆖(wn)}ӭж⡣

(1)ڰ܇?yn)?wn)}ûʽQٵĽֱⷨӮr(sh)g-xDٮĽ澀Ҫ(sh)c(din)(g)(sh)

}ABǹ܇ăɂ(g)܇վAվBվ·ÿ8c(din)11c(din)ABվÿ30ͬr(sh)l(f)һv܇֪AվBվ γҪ105BվAվγҪ80(wn)830900Aվl(f)܇˾C(j)քeܿvBվ_(ki)(li)܇?

(2)ڰ܇⡣“(lin)3(g)ʽʹ

܇g=(܇ٶ+ٶ)¼r(sh)gg

܇g=(܇ٶ-ٶ)׷¼r(sh)gg

܇g=܇ٶȡ܇l(f)܇r(sh)gg

12ϲ

܇g=(du)ٶȡ?x)rgg

֞2(g)С}ͣ

1һgl(f)܇(wn)}3(g)ʽѸ;

2_(d)Ŀĵغ׷Ĺ܇v(sh)(bio)(zhn)ǣD-Mܶ3(g)ʹʽ-Y(ji)sȫ=vt-Y(ji)ֲ(sh)(wn)}(sh)(sh)

}СT܇ȥСҾە(hu)·ע⵽ÿ9犾һv܇ĺ󷽳ԽССT܇·܇ˣֻ܇ȥС@r(sh)С ְl(f)F(xin)܇Ҳÿ9犳Խһv܇֪܇ٶСT܇ٶȵ5@3N܇v^(gu)жքô܇վÿٷ l(f)һv܇?

ƽٶȆ(wn)}

(du)׵}ʽҪӛ·=ƽٶȡr(sh)gs=vt(yng)ıҪֱӌʽⲢҎ(gu)γг̆(wn)}Ľy(tng)һQ

ߡh(hun)ܵ(wn)}

һ(zhn)Ժyȵ}֞顰ͬһ·ͬ·挍(sh)ܷ񿴵С} 漰چ(wn)}׺λÆ(wn)}(}м(x)©Nλÿ)ʽ(wn)}(ᘌ(du)ܷ񿴵(wn)}(wn)ܷھεĹս̎)

犱톖(wn)}

ǭh(hun)Ά(wn)}ضP(gun)ϵʽv= 12vr(sh)

(1)Y(ji)ӛr(sh)ÿ1/120.5;ÿ16r(sh)ᘺͷᘡ롱칲غ11Σֱ11ֱǹ22(ʲôλҪԼñDY(ji))

(2)}˼··̲˼·

()=(r(sh))+()

x=x/12+(_(ki)ʼr(sh)r(sh)ᘵĸ+Kֹr(sh)^(gu)r(sh)ᘵĸ)

ǣ6x=x/2+(_(ki)ʼr(sh)r(sh)ᘵĽǶ+Kֹr(sh)^(gu)r(sh)ᘵĽǶ)

ԽQ󲿷֕r(sh)ᘆ(wn)}}غֱֱǶȡăɂ(g)gһ(g)r(sh)γɶٽǶ

}9c(din)23֕r(sh)r(sh)ᘺͷᘵĊAǶٶ?@һr(sh)_(ki)ʼ(jng)^(gu)ٷ犣r(sh)ᘺͷᘵһδֱ?

(3)犆(wn)}õĽQѽ(jng)г̆(wn)}׃ɱ(wn)}(yng)ıʽ

šԄ(dng)݆(wn)}

ȻûP(gun)ϵʽsݼ(j)(sh)=(vˡv)tϻ½Q@·̆λȫǡ(j)ΨһҪעtϻҪʾɌ(sh)Hߵļ(j)(sh)/˵ٶȡ

}̈(chng)Ԅ(dng)Ԅɂ(g)ķ߄(dng)ŮкY(ji)Ů40(j)_(d)к80(j)_(d)кλr(sh)g(ni)ߵķݼ(j)(sh)Ů2t(dng)ԓoֹr(sh)ɿķݼ(j)жټ(j)?

ʮʮ·چ(wn)}

ڲͬϵг̆(wn)}](mi)Ľ}ɣֻҪό(sh)(sh)шD(du)ͨ^(gu)׺ηͿԽQλL(zhng)ε·ϵг̆(wn)}

ʮһУ܇(wn)}

@һ}(du)У܇У܇(li)ؽ(du)鲻ಽк܇Kͬr(sh)_(d)Ŀĵ(_(d)Ŀĵص̕r(sh)gҪC)4NС}ͣ(j)У܇ٶ((li)زͬ)༉(j)ٶ(ͬ಻ͬ)(sh)Ƿ׃

(1)܇ٲ׃-ٲ׃-(sh)2(g)(Ҋ(jin))

(2)܇ٲ׃-ٲ׃-(sh)(g)

(3)܇ٲ׃-׃-(sh)2(g)

(4)܇׃-ٲ׃-(sh)2(g)

(bio)(zhn)ⷨD-3(g)ʽӣ

1r(sh)g=һ(g)(du)܇ĕr(sh)g+@(g)(du)鲽еĕr(sh)g;

2܇ߵĿ·;

3һ(g)(du)鲽еĕr(sh)g=܇ͬr(sh)l(f) (li)ĕr(sh)g

(hu)õׂ(g)·̶εıֵٸ(j)(sh)

(jin)}װcҰW(xu)ͬr(sh)ČW(xu)Уl(f)ȥ15ǧĹ@棬҃ɰIJٶȶÿСr(sh)4ǧסW(xu)Уһv܇ٶÿСr(sh)48ǧ ף@v܇ǡһ(g)ČW(xu)ʹɰW(xu)̕r(sh)g(ni)_(d)@ôװW(xu)cҰW(xu)ҪеľxǶǧ?

ʮC

(jin)}ABҪɳĮ̽U(xin)ÿɳĮ̎20ǧ֪ÿԔyһ (g)24ʳˮ(zhn)ʳ;һ(g)h(yun)ɳĮǧ(Ҫ˷سl(f)c(din))?@(wn)}䌍(sh)ܑ(yng)}h (do)ӛY(ji)ՓԱ㿼ԇÿ˿Ԏtʳh(yun)ߵĕr(sh)gT

(1)(Cһ(g)ߵh(yun)˶Ҫ؁(li))

1ˣ;ʳT=2/3t;;ʳT=3/4t

2ˣ

(2)ɳĮ(Cһ(g)˴^(gu)ɳĮ؁(li)ˣ˶Ҫ؁(li))n(ɳĮ)1˴ɳĮ

1;ʳT[2n/(n+1)]tTǴɳĮҪ씵(sh)

2;ʳT=(1+1/3+1/5+1/7++1/(2n-1))t

С(sh)W(xu)ؿ} ƪ2

1Ͳ(wn)} ֪ɔ(sh)ĺc@ɂ(g)(sh)

֪ɔ(sh)102@ɂ(g)(sh)

E

ͼϲԽԽ;2Ǵ;

͜pȥԽpԽС;2С

Et(sh)=(10+2)2=6С(sh)=(10-2)2=4

2Ȇ(wn)}

ה(sh)Ҕ(sh)12Ҽ:=74ɔ(sh)

E

ҵı(sh)

ӌ(sh)Hĸ(sh)

һԸԵı(sh)ɔ(sh)á

һ12(7-4)=4

Լה(sh)飺4X7=28Ҕ(sh)飺4X4=16

3g(wn)}

E

g׃ͬr(sh)Ӝp

q(sh)һ׃(sh)Ҳ׃

ץס@c(din)һж(jin)Ρ

1С܊8 qְֽ34qְֵgС܊3?

q(hu)׃Ěq(sh)c(din)34-8=26Ȼ(hu)׃֪(sh)D(zhun)Ȇ(wn)}

26(3-1)=13ְֵg13X3=39qС܊g13X1=13qԑ(yng)ԓ5

213qܵܽ9q(dng)܂zq(sh)ĺ40qr(sh)˸(yng)ԓǶٚq?

q(hu)׃Ěq(sh)13-9=4Ҳ(hu)׃q(sh)40q(sh)4D(zhun)Ͳ(wn)}

tĚq(sh)(40+4)2=22ܵܵĚq(sh)(40-4)2=18Դ9

4ͱȆ(wn)} ֪w󲿷

ұ(sh)͞27::=2:3:4ұ(sh)

E

Ҫ˺ּԭt

ĸȔ(sh)Լ

ͳԱԓõ

ĸȔ(sh)ͣĸ飺2+3+4=9;

Լtұ(sh)ռ͵ıքe293949;

ͳԱtמ27X29=6Ҟ27X39=927X49=12

5uͬ\(wn)}

uͬ\^36 _120uÔ(sh)

E

O(sh)ȫuO(sh)ȫá

ˎֻ_ˎֻ?

_IJuÔ(sh)

Õr(sh)O(sh)ȫutӔ(sh)=(120-36X2)(4-2)=24

ur(sh)O(sh)ȫtu(sh) =(4X36-120)(4-2)=12

6 ·̆(wn)}

(1)(wn)}

҃ˏ120ǧ׵ăɵ׵ٶȞ40ǧ/Сr(sh)ҵٶȞ20ǧ/Сr(sh)ٕr(sh)g?

E

һ·ȫ^(gu)

ٶȺͰѕr(sh)g

һ̣·ȫ^(gu)^(gu)·̺ǡǃɵصľx120ǧ

ٶȺͣͰѕr(sh)g҃˵ĿٶȞ˵ٶ֮40+20=60(ǧ/Сr(sh))ĕr(sh)g͞12060=2(Сr(sh))

(2)׷(wn)}

ܶˏļȥ(zhn)㲽ٶȞ3ǧ/Сr(sh)2Сr(sh)ܵT܇l(f)ٶ6ǧ/Сr(sh)וr(sh)׷?

E

B(nio)ҪwS׷

ߵ·ٶȲr(sh)g(du)

ߵ·̣3X2=6(ǧ)

ٶȵIJ6-3=3(ǧ/Сr(sh))

׷ϵĕr(sh)g63=2(Сr(sh))

7 Ȇ(wn)}

(1)ˮϡ

20ǧ˝Ȟ15%ˮˮǧ˺׃?yu)?0%?

E

ˮǣˮ

ˮpˮǼˮ

ˮԭ(li)Ǟ飺20X15%=3(ǧ)

ˮ3ǧ10%‘(yng)жˮ310%=30(ǧ)

ˮpˮˮpȥԭ(li)ˮ30-20=10(ǧ)

(2)ǝ⻯

20ǧ˝Ȟ15%ˮǶǧ˺׃?yu)?0%?

E

ˮˮˮ

ˮpˮ}

ˮԭ(li)ˮ飺20X(1-15%)=17(ǧ)

ˮˮ17ǧˮ20%‘(yng)жˮ17(1-20%)=21.25(ǧ)

ˮpˮˮٜpȥԭ(li)ˮ21.25-20=1.25(ǧ)

8̆(wn)}

һ(xing)̣׆Ϊ(d)4҆Ϊ(d)6ɡͬr(sh)2҆Ϊ(d)?

E

̿O(sh)11ԕr(sh)gǹЧ

Ϊ(d)r(sh)ЧԼģһRr(sh)ЧDZ˵Чʺ

1pȥѽ(jng)ıǛ](mi)ģ](mi)ijԹЧʾǽY(ji)

[1-(16+14)X2](16)=1()

9ֲ(sh)(wn)}

E

ֲ(sh)ٿҪ(wn)·?

ֱĜpȥ1AǽY(ji)

1һlL(zhng)120׵R·ֲ(sh)g4ֲ(sh)ٿ?

·ֱtֲ(sh)1204-1=29()

2һlL(zhng)120׵ĈAλ߅ֲ(sh)g4ֲ(sh)ٿ?

·LjAtֲ(sh)1204=30()

10ӯ̝(wn)}

E

ȫӯȫ̝ĜpȥС;һӯһ̝ӯ̝һ

ԷIJY(ji)ǷĖ|

1Сѷÿ10(g)9(g);ÿ8(g)7(g)жСѶ?

һӯһ̝tʽ飺(9+7)(10-8)=8()(yng)Ӟ8X10-9=71((g))

2ʿӏÿ45l(f)t680l(f);ÿ50l(f)t200l(f)ʿӏ?

ȫӯ(wn)}tĜpȥСʽ飺(680-200)(50-45)=96()(yng)ӏ96X50+200=5000(l(f))

3W(xu)l(f)ÿ10t90;ÿ8 t8ٌW(xu)ٕ?

ȫ̝(wn)}tĜpȥСʽ飺(90-8)(10-8)=41()(yng)41X10-90=320()

11(sh)(wn)}

r(sh)犬F(xin)ڱʾĕr(sh)g18c(din)D(zhun)1990Ȧǎc(din)?

E

(sh)(N-1)(g)С1(N-1)

׃r(sh)ҪֻҪ

D(zhun)һȦ1Сr(sh)D(zhun)24ȦǕr(sh)D(zhun)1ȦҲǕr(sh)ᘻصԭλ198024(sh)22ஔ(dng)ڷǰD(zhun)22(g)ȦǰD(zhun)22(g)Ȧஔ(dng)ڕr(sh)ǰ22(g)Сr(sh)r(sh)ǰ22Сr(sh)Ҳஔ(dng)24-22=2(g)Сr(sh)ஔ(dng)ڕr(sh)2Сr(sh)r(sh)ஔ(dng)18-2=16(c(din))

12ţԲ݆(wn)}

E

ÿţÿijԲO(sh)Ƿݔ(sh)1A^BijԲǎ?M^NijԲǎ?ĜpȥСģԶߌ(du)(yng)씵(sh)IJֵY(ji)DzݵL(zhng)ʡԭеIJ˷

ʽA^BijԲpȥBԲݵL(zhng)ʡδ֪Բţ֞ɂ(g)֣һСȳ²(g)(sh)Dzݵı;еIJʣţ(sh)͌Ҫ.씵(sh)֪

(g)(chng)ϲL(zhng)һһӿ27^ţ6԰Ѳݳ;23^ţ9Ҳ԰Ѳݳ(wn)21^Ѳݳꡣ

ÿţÿijԲO(sh)1t27^ţ6ijԲ27X6=16223^ţ9ijԲ23X9=207;

ĜpȥСģ207-162=45;ߌ(du)(yng)씵(sh)IJֵ9-6=3()tݵL(zhng)453=15(ţ/);

ԭеIJ˷ơ

ʽA^BijԲpȥBԲݵL(zhng)

ԭеIJ=27X6-6X15=72(ţ/)

δ֪Բţ֞ɂ(g)֣

һСȳ²(g)(sh)Dzݵıʣ@f(shu)Ҫ21^ţ֞ɲһ15^ţIJ;ʣµ21-15=6ȥԭеIJݣ씵(sh)飺

ԭеIJ·ʣµţ=726=12()

С(sh)W(xu)ؿ}͡P(gun)£

2017С(sh)W(xu)ؿ}02-23

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