easy easy

分类: 作业答案 • 2021-12-19 22:27:32

问题描述：

easy easy
已知f（x）为R上的奇函数,g（x）为R上的偶函数,且g（x）=f（x-1）,g（2）=2001,则f（1999）的值为

答

f（x）为R上的奇函数,g（x）为R上的偶函数f（x）=-f（-x）,f（0）=0；g（x）=g（-x）g（-x）=g（x）=f（x-1）=f（-x-1）f（0）=f（-2）=-f(2)=-f(-3)=f(4),所以f（x）=f（x+4N+）所以f（1999）=f(3）=-f(-3)=-f(1)=-...

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分解因式：x2+xy-6y2+x+13y-6=_．
一道化学平衡得的题

easy easy

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