1.((-2)^n+5^n)/((-2)^(n+1)+5^(n+1))的极限,n趋向于无穷大量;
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1.((-2)^n+5^n)/((-2)^(n+1)+5^(n+1))的极限,n趋向于无穷大量;
2.2^x的极限,x趋向于负无穷大量.
需要的是具体的过程和标准的格式,
2.2^x的极限,x趋向于负无穷大量.
需要的是具体的过程和标准的格式,
![1.((-2)^n+5^n)/((-2)^(n+1)+5^(n+1))的极限,n趋向于无穷大量;](/uploads/image/z/18188530-34-0.jpg?t=1.%28%EF%BC%88-2%EF%BC%89%5En%2B5%5En%29%2F%28%28-2%29%5E%28n%2B1%29%2B5%5E%28n%2B1%29%29%E7%9A%84%E6%9E%81%E9%99%90%2Cn%E8%B6%8B%E5%90%91%E4%BA%8E%E6%97%A0%E7%A9%B7%E5%A4%A7%E9%87%8F%EF%BC%9B)
1.n趋向于无穷大时,[(-2)^n+5^n]/[(-2)^(n+1)+5^(n+1)]=[(-2/5)^n+1]/[5-2(-2/5)^n]的极限为1/5;
2.x趋向于负无穷大时,2^x=(1/2)^x的极限为0.
2.x趋向于负无穷大时,2^x=(1/2)^x的极限为0.
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