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高中数学第一章算法初?_2基本算法语句课堂探究新人教B版必? - 百度文库

Դû ʱ䣺2025/10/19 16:02:16 loading ƪĵֻ
˵ݽԤݿܲȫҪĵҪݣwordʹáword΢ź:xxxxxxxQQxxxxxx ܸṩĵл֧½⡣

ĵռŰ.word汾ɱ༭.ӭ֧.

ѧ һ 㷨 1.2 㷨̽ ˽B

3

1ѭִԭ

(1)forѭִй̣ͨforѭֵѭiѭֵֵʱ˳ִѭڵĸ䣬endѭһֵֵȽϣԲֵΧٴִѭ壬ظִУֱѭֵֵѭ

ܰʾ ֻеѭȷʱʹñ䣮

ڲΪ0롰ѭΪʱҪֵڳֵֵСڳֵѭִУΪʱҪֵСڳֵ

forӦijͼͼʾ

(2)whileִй̣ӦڳͼеѭṹжǷʱִѭ壬endʱͷصwhileжԳظ̣ȥִend(˳ѭ)

ܰʾ ٵѭδ֪ʱֻwhileѭۼӡ۳⣬ѭѭΨһģȷ޷γɡֹͣѭѭҪע롰ǡ񡱺ĴӦ

whileӦĻͼͼʾ 2.Scilabг÷

ѧ (еij˷) (еij) ab(еָ) (еСڵڷ) (еĴڵڷ) (еIJȺ) |x|(еȡֵ) (߼еġҡ) (߼еġ) Scilabг *(ʾ˷) /(ʾ) ^a b(ʾָ) (ʾСڵڵķ) (ʾڵڵķ) (ʾڵķ) abs(x)(ȡֵĺ) and(ʾ߼еġҡ) or(ʾ߼еġ) 1 Scilabдij򣬸ݳ򻭳ͼ xinput(x)

1word汾ɱ༭.ӭ֧.

ĵռŰ.word汾ɱ༭.ӭ֧.

yinput(y) print(%io(2)x/2) print(%io(2)3*y) xx1 yy1

print(%io(2)x) print(%io(2)y)

ó1,2input䣬ҪӼxyֵ3,4print䣬ҪĻ3yֵ5,6丳ֵ䣬x1ֵ

2ԭxֵy1ֵԭyֵ7,8Ļxyֵɴ˿ɵóͼ ⣺

˼ 򻭿ͼͣؼĹʲôȻʵʲøֵʱɶһظֵֵȡһεĸֵ. 2x1x>0??

2 ֪y?2x1x0

??2x24xx<0

д

ֶ֪κĽʽֵ⣮зֶκĶ򱻷ֳ֣ӶڳжʹʱҪעд˳ĶӦ ⣺£ xinput(x) if x0

y(2* x^2)1 else if x0

y2*x1 else

y2*x^24] end end

print%io2,y

2word汾ɱ༭.ӭ֧.

2

x

xֵyֵͼ

ĵռŰ.word汾ɱ༭.ӭ֧.

ͼͼʾ

˼ ݱɻдʽ(Ƕʽ)£ 3 forд13572 015ֵij

һ㷨£

S1 S1 S2 i3 S3 SSi S4 ii2

S5 i2 015ִS6ִS3S4S5 S6 S.

⣺£

˼ (1)еSS iѭ壮

(2)һ۳⣬趨SijʼֵΪ1iijʼֵΪ1ڶҲɸΪfor i122 015нһģ

(3)עⱾзֺŵãûзֺţĻϻÿһнзֺţֻн

111

4 ѭд110СȻn㷨дӦ

23n

111

ⲻȺŵΪ1йɵۼ㣬ۼӱS

23nҪS10СȻnʿáwhile S10ѭҪiͨii1ѭ ⣺㷨£

S1 S0 S2 i1 S3 SS

S4 S10ii1S3i.

£

1

i

S0 i1 SS1/i While S10

ii1

3word汾ɱ༭.ӭ֧.

ĵռŰ.word汾ɱ༭.ӭ֧.

SS1/i

end

print(%io(2)i)

˼ ڱֵԤȲ˲ſwhileѭҪע㷨һ£ 5 дʹ123________2 014һ

⣺S1

i1 while S2 014

ii1 SSi

end

print(%io(2)i)

㷨ֻ1õֵʲȷʵϣΪзѡprint(%io(2)i)Ƶѭڣ ⣺ⷨһ

S1 i1

while S2 014

print(%io(2)i) ii1 SSi

end

S1 i1

while S2 014

ii1 SSi

print(%io(2)i1)

end

4word汾ɱ༭.ӭ֧.

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