问题 填空题
lim
n→∞
3n-5n+1
3n+1+5n-2
=______.
答案

lim
n→∞
3n-5n+1
3n+1+5n-2

=

lim
n→∞
(
3
5
)
n
-5
12×(
3
5
)
n
+
1
25

=-125.

故答案为:-125.

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