WORD
鏍煎紡
涓撲笟璧勬枡鏁寸悊
楂樼瓑鏁板妯℃嫙鍗?/p>
1
涓�姹備笅鍒楁瀬闄?/p>
1
1
limsin
n
n
n
=
0
2
姹?/p>
lim
x0
x
x
=1
锛?/p>
x
鈫?/p>
+0
-1,x
鈫?/p>
-0
1
3
姹?/p>
limx
e=
鈭?/p>
x0
4lim
x0
xsinx
xsin5x=1/3
浜?/p>
a
鍙栦粈涔堝�硷紝
f(x)
x
ex
axx
0
0
杩炵画
瑙ｏ細
i
)
x0
锛?/p>
x0
鏃讹紝
f(x)
鍧囪繛缁?/p>
ii)x0
鏃讹紝
f(0)a
f(00)1
f(00)a
鎵�浠?/p>
a1
鏃?/p>
f(0)f(0)1
锛?/p>
f(x)
鍦?/p>
x0
澶勮繛缁?/p>
缁间笂鎵�杩帮紝
a=1
鏃?/p>
f(x)
杩炵画
涓夎绠椾笅鍒楀悇棰?/p>
1
宸茬煡
y2sinxlnx
姹?/p>
,
y
瑙ｏ細
y
鈥?/p>
=2cosx.lnx+2sinx.(1/x)