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ʱ:2023-07-15 21:19:52 ༭:ɾ
פѡ50䡿

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1פ㡢פ͡פפפפءפפפϡפءפפפաפפڡפĿפפϢפʹפפʦפᡢפΡפפҡפ˥פɡפפ⡢פפפֹפפꡢפ١פˡפۡפbפɫפ

2xḺ򴫲IJΪвΪ

3y1=Acos2Уt/T-x/ˣ1

4䣺յС壬һ¥á

5פָƵͬ䷽෴ֲһǵ粨شγɵһֲַ״̬еһһһķ䲨ߵѹӵĵֲߵѹĵγɲڡڲϣںͲλʼDzģˡפӡ󣬵˲ʱֵʱıġֲķֵȣ򲨽ڵķֵΪ㡣

6ʹҪڶ塢ʡ÷ȷ𣬾£

7zhlchl

8ġ÷

9ڲϣںͲλʼDzģˡפӡ󣬵˲ʱֵʱıġ

10ߴֱͦʡ

11ķ羰ԼоرһֱפĬĬعۿķ羰

12chlΡعۡȪǡԶɽתУdzبѸ۶Σ׳ȡ档

13ΪʽΪ

14ʣ

15,uΪפ,xyֱΪˮƽʹֱ꣬Ϊ

16еһһһķ䲨ߵѹӵĵֲߵѹĵγɲڡڲϣںͲλʼDzģˡפӡ󣬵˲ʱֵʱıġֲķֵȣ򲨽ڵķֵΪ㡣

17һ䣺۹ʽĴлл۵ľࡣ

18y=y1+y2=2Acos2(x/)cos2(t/T)3

192(sngl)߸ߵֱ

20ʣפʣߡ

21صֱֱߵ֮⡣Դʣһ

22ΪTΪˣ

23

24վפҪָrruӿڴԲãˮפ1.5ͻӰûҵӰ֪

25еһжԼʮפ㡣

26һ

27һͬzhlchl岻ͬ1.ʱվţ2.ָվֱֱʡ

28ϳɺפ

29ֱֱʣصֱֱߵ֮⣬ǸԴʣһڽˡ

30һˣ䣺ڴǰգɵظеį

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31෴򴫲

32פפɫפֹפפפפפפפפפפפפפפפڵפפפפפ

33y2=Acos2Уt/T+x/ˣ2

341ylɽһͦᶨɶҡ˻

351.ʱվţûж2.ָվ

36פ˼Ϊͣһطפ㡢פգ꺬ΪӻڹԱסְִĵطšλɳĻijأפפء

37䣺йǿϢľ綫

38ʣפ

39

40x򴫲IJΪв

41פ̹ʽһʽԱʾΪ:?2u/?x2+?2u/?y2+u=0

42פפפפפͣפפСפפפפֹפפᡢפ϶פޡפơפ췡פꡢפġפפɫפĿפפֹפפۡפ͡פפ롢פšפפӰפפޡפפפءפפСפǡפפפפ⡢פ㡢פפפפפפӪפפʦפʹפꡢפפפ˥פΡפפפ

43ΪAļгx

44ɼϳɺIJϵκһ㶼ͬһڵļг񶯡

45zhl壺1ʱվûж2ָվԡʫ硤ࡷհ

46פָƵͬ䷽෴ֲһǵ粨شγɵһֲַ״̬

47פأפ꣬פ壬פפ㣬פפפأפפ㣬פ꣬פפפ⣬פվפפѵפഺפפפפۣͣפ

48פָƵͬ䷽෴ֲһǵ粨شγɵһֲַ״̬еһһһķ䲨ߵѹӵĵֲߵѹĵγɲڡ

49ʹ

50ֲķֵȣ򲨽ڵķֵΪ㡣

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