※ 引述《pobm (待從頭收拾舊河山)》之銘言:
: lim (sinx/x)^(1/x^2)
: x→0
ln(sinx)-lnx
= exp {lim x->0 -------------- }
x^2
xcosx-sinx
= exp {lim x->0 ------------ }
2x^2sinx
xcosx-sinx
≒ exp {lim x->0 ----------- }
2x^3
-cosx-cosx+xsinx
= exp { lim x->0 -------------------- }
12
1
= exp{ - --- }
6
 ̄ ̄ ̄ ̄ ̄ ̄ ̄
: =lim e^[(sinx/x)^(1/x^2)]
: ^^^^^^^^^^^^^^^^^^^^^^^^.......................(i)
: =e^[lim (sinx/x)^(1/x^2)] = -1/6
: ^^^^^^^^^^^^^^^^^^^^^^^^.......................(ii)
: 我想問這個(i)到(ii)對不對
: 考試時可以這樣寫嗎
: 謝謝^^
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