設(shè)ε是一個(gè)很小的數(shù),是x和0之間的距離.
lim(x→0-) 1/x,x0,x=0+ε
= 1/ε
= +∞
由於lim(x→0-) 1/x ≠ lim(x→0+) 1/x
∴l(xiāng)im(x→0) 1/x 不存在
lim1/x當(dāng)x趨近0的左極限和右極限等于什么,當(dāng)x趨近0時(shí)極限是否存在
lim1/x當(dāng)x趨近0的左極限和右極限等于什么,當(dāng)x趨近0時(shí)極限是否存在
數(shù)學(xué)人氣:897 ℃時(shí)間:2019-08-19 23:24:35
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