Re: [理工] [工數] 拉氏~~~
※ 引述《topee (eason)》之銘言:
: 1
: L[cos^2 3t]
: cos^2 該怎麼下筆
: 如果是sin^2呢?
1+cos2*3t
= L[-----------]
2
1 1 s
= ---( --- + ------- ) 這樣對嗎?
2 s s^2+6^2
sin^2 3t
1-cos2*3t
= L[-----------]
2
1 1 s
= ---( --- - ------- ) 這樣對嗎?
2 s s^2+6^2
--
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