lim {(-4)^n+5^n}/{4^(n+1) + 5^(n+1)} n→无限
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lim{(-4)^n+5^n}/{4^(n+1)+5^(n+1)}n→无限lim{(-4)^n+5^n}/{4^(n+1)+5^(n+1)}n→无限lim{(-4)^n+5^n}/{4^(n+1)+5
lim {(-4)^n+5^n}/{4^(n+1) + 5^(n+1)} n→无限
lim {(-4)^n+5^n}/{4^(n+1) + 5^(n+1)} n→无限
lim {(-4)^n+5^n}/{4^(n+1) + 5^(n+1)} n→无限
(-4)^n+5^n}/{4^(n+1) + 5^(n+1)
同时除以5^(n+1) 得到((-4/5)^n/5+1/5)/((4/5)^(n+1)+1)
lim {(-4)^n+5^n}/{4^(n+1) + 5^(n+1)} n→无限
=1/5
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lim {(-4)^n+5^n}/{4^(n+1) + 5^(n+1)} n→无限
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