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若函数f(x)=ax^3+bx+sinx+1,f(1)=-1,则f(-1)=
RT
人气:499 ℃ 时间:2020-10-02 05:21:35
解答
f(1)=a+b+sin1+1=-1
a+b+sin1=-2
f(-1)
=-a-b+sin(-1)+1
=-a-b-sin1+1
=-(a+b+sin1)+1
=2+1
=3
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