10分eassy調項數學問題

2008-04-09 6:30 am

E= rkL/R + kL點樣變成 E/krL= 1/R+1/r

回答 (3)

2008-04-09 6:44 am

✔ 最佳答案

E = rkL/R + kL
E = rkL (1/R + 1/r) ..... 試想想 rkL x 1/r = rkL/r = kL

then divide both sides with rkL

∴ E / rkL = 1/R + 1/r

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2008-04-09 7:26 am

E= rkL/R + kL
E/(rKL)=(rKL/R+kL)/rKL
E/rKL=rKL/(rKLxR)+KL/rKL
E/rKL=1/R+1/r

參考: me

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2008-04-09 6:42 am

E= rkL/R + kL
E/rkL= rkL/R(rkL) + kL/rkL
E/krL= 1/R+1/r

參考: my own calculation

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