lim(x-∞)(5x^2/1-x^2)+2^(1/x)
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lim(x-∞)(5x^2/1-x^2)+2^(1/x)lim(x-∞)(5x^2/1-x^2)+2^(1/x)lim(x-∞)(5x^2/1-x^2)+2^(1/x)lim(x-∞)(5x^2/1-
lim(x-∞)(5x^2/1-x^2)+2^(1/x)
lim(x-∞)(5x^2/1-x^2)+2^(1/x)
lim(x-∞)(5x^2/1-x^2)+2^(1/x)
lim(x-∞)(5x^2/1-x^2)+2^(1/x) 分子分母除x^2
=lim(x-∞)(5/1/x^2-1) +2^(1/x)
=5/(0-1)+2^0
=-5+1
=-4
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