求解第四大题1问
1个回答
2016-10-18
展开全部
(x→0-)lim f(x) = f(0) = 0-0 = 0
(x→0+)lim f(x) =(x→0+)limx³ = 0³ = 0
∴ (x→0)lim f(x) = 0
(x→1-)lim f(x) = f(1) = 1³ = 1
(x→1+)lim f(x) =(x→1+)lim(3x+2) = 3+2=5
∴ (x→1)lim f(x) 不存在
(x→0+)lim f(x) =(x→0+)limx³ = 0³ = 0
∴ (x→0)lim f(x) = 0
(x→1-)lim f(x) = f(1) = 1³ = 1
(x→1+)lim f(x) =(x→1+)lim(3x+2) = 3+2=5
∴ (x→1)lim f(x) 不存在
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