设f(x)=在x=0处连续,则a=_____________,b=_____________

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问题 设f(x)=在x=0处连续,则a=_____________,b=_____________

选项

答案a=-1,b=1

解析 f(0+0)=
=a+4b,f(0)=3,
f(0-0)=
=2b+=2b+=2b+1,
因为f(x)在x=0处连续,所以a+4b=3=2b+1,解得a=-1,b=1.
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