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ǰλãҳ > 北师大版数学必修三同步课时作业:??算法初步 2.1 - 百度文库

北师大版数学必修三同步课时作业:??算法初步 2.1 - 百度文库

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ڶ 2 2.1

A

һѡ 1ͼС

AͼĿʼ Bݵ CִֵмĴ Dݸж [] ڿͼС

Ϊ롢򣬱ʾݵ

ʾ( B )

2вѡṹ( D ) Aһxľֵ BijһԪη̸Ĺ Cabc D֪Բİ뾶

[] ABCжѡṹDֻ˳ṹ 3֪y?߼ṹ( C )

A˳ṹ Bѡṹ

C˳ṹѡṹ

D˳ṹѡṹģṹ

[] ںʽȡԱȡֵΧԱѡṹκοͼжҪõ˳ṹѡC

4ĶͼʾijͼӦijxֵΪ1yֵΪ( C )

?0?x<0??

??1?x0?

xֵӦĺֵƿͼʱеĻ

A2 C8

B7 D128

x??2?x2?

[] ãóʾֶκy?f(1)918ѡC

?9x?x<2??

5ͼʾͼʾ㷨( B )

A߳Ϊ3,4,5ֱ B߳Ϊ3,4,5ֱԲ C߳Ϊ3,4,5ֱԲ D3,4,5ΪҵԲ

abc

[] ֱԲ뾶r.

26֪

1a22

blog33ԭͼʾֵΪ( D )

AC

2 221

2

B2 D

21

2

[] a2

33

a121lg3

2֪a>b.

b2lg3

7֪y|2x5|ͼʾͼʾǸxֵӦ㷨55

뽫ͼТٴӦ xݻ(x>) ڴӦ_y2x5___.

22

5

[] 2x50xʱy2x5

25

2x5<0ʱx<ʱy52x.

255

ʢٴx(x>Ҳ)

22ڴy2x5.

8ͼʾĿͼ룭4Ϊ_Ǹ___.

[] ѡṹ⣮ڣ4<0Ӧѡ񡰷һ֧Ǹ

9֪P0(x0y0)ֱlAxByC0дP0ֱlľd㷨㷨ͼ

[] (1)ѧ㷨

һx0y0ֱ߷̵ϵABC ڶz1Ax0By0C z2A2B2

IJd|z1|z 2

岽d.

(2)㷨ͼ㷨ͼʾ

?x2 ?x>0?10y?

?0 ?x0?

дúֵ㷨ͼ

??x2 ?x<0?[] 㷨£ 1 x

2 x>0ôʹyx2x0ôʹy0x<0ôʹyx23 ֵy. ͼͼʾ

B

һѡ

1ͼʾͼУҪʹֵֵȣaֵӦΪ( D )

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ڶ 2 2.1 A һѡ 1ͼСAͼĿʼ Bݵ CִֵмĴ Dݸж [] ڿͼСΪ롢򣬱ʾݵ ʾ( B ) 2вѡṹ( D ) Aһxľֵ BijһԪη̸Ĺ Cabc D֪Բİ뾶 [] ABCжѡṹDֻ˳ṹ 3֪y?߼ṹ( C ) A˳ṹ Bѡṹ C˳ṹѡṹ D˳ṹѡṹģṹ [] ںʽȡ

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