פ
1פ㡢פ͡פפפפءפפפϡפءפפפաפפڡפĿפפϢפʹפפʦפᡢפΡפפҡפ˥פɡפפ⡢פפפֹפפꡢפ١פˡפۡפbפɫפ
2xḺIJΪвΪ
3y1=Acos2Уt/T-x/ˣ1
4䣺յС壬һ¥á
5פָƵͬ䷽෴ֲһǵ粨شγɵһֲַ״̬еһһһķ䲨ߵѹӵĵֲߵѹĵγɲڡڲϣںͲλʼDzģˡפӡ˲ʱֵʱıġֲķֵȣڵķֵΪ㡣
6ʹҪڶ塢ʡ÷ȷ𣬾£
7zhlchl
8ġ÷
9ڲϣںͲλʼDzģˡפӡ˲ʱֵʱıġ
10ߴֱͦʡ
11ķ羰ԼоرһֱפĬĬعۿķ羰
12chlΡعۡȪǡԶɽתУdzبѸ۶Σ׳ȡ档
13ΪʽΪ
14ʣ
15,uΪפ,xyֱΪˮƽʹֱ꣬Ϊ
16еһһһķ䲨ߵѹӵĵֲߵѹĵγɲڡڲϣںͲλʼDzģˡפӡ˲ʱֵʱıġֲķֵȣڵķֵΪ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
פ
31෴
32פפɫפֹפפפפפפפפפפפפפפפڵפפפפפ
33y2=Acos2Уt/T+x/ˣ2
341ylɽһͦᶨɶҡ˻
351.ʱվţûж2.ָվ
36פ˼Ϊͣһطפ㡢פգ꺬ΪӻڹԱסְִĵطšλɳĻijأפפء
37䣺йǿϢľ綫
38ʣפ
39
40xIJΪв
41פ̹ʽһʽԱʾΪ:?2u/?x2+?2u/?y2+u=0
42פפפפפͣפפСפפפפֹפפᡢפ϶פޡפơפ췡פꡢפġפפɫפĿפפֹפפۡפ͡פפ롢פšפפӰפפޡפפפءפפСפǡפפפפ⡢פ㡢פפפפפפӪפפʦפʹפꡢפפפ˥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
50ֲķֵȣڵķֵΪ㡣