f(x)={sinx+1 x≥0,2x-1 x
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f(x)={sinx+1x≥0,2x-1xf(x)={sinx+1x≥0,2x-1xf(x)={sinx+1x≥0,2x-1x就是求f(x)的左右极限,lim(x→0+)f(x)=sin0+1=1而l
f(x)={sinx+1 x≥0,2x-1 x
f(x)={sinx+1 x≥0,2x-1 x
f(x)={sinx+1 x≥0,2x-1 x
就是求f(x)的左右极限,
lim(x→0+)f(x)
= sin0 +1
= 1
而
lim(x→0-)f(x)
= 2*0 -1
= -1
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