当x趋向于无穷,求lim(1+1/2+1/4+…….+1/2^n)的极限
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当x趋向于无穷,求lim(1+1/2+1/4+…….+1/2^n)的极限
当x趋向于无穷,求lim(1+1/2+1/4+…….+1/2^n)的极限
当x趋向于无穷,求lim(1+1/2+1/4+…….+1/2^n)的极限
lim(1+1/2+1/4+…….+1/2^n)的极限
=lim(1+1/2+1/4+…….+1/2^n)
=lim(1-1/2^n+1)/(1-1/2)
=lim2-1/2^n
=2
2
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