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[函数] 2022年高考全国乙卷理科第12题 函数性质求函数和

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isee posted 2022-6-10 20:46 |Read mode
12.已知函数\(f(x),g(x)\)的定义域均为R,且\(f(x)+g(2-x)=5,g(x)-f(x-4)=7\).若\(y=g(x)\)的图像关于直线\(x=2\)对称,\(g(2)=4\),则\(\sum_{k=1}^{22}\,f(k)=\)(    )

A.\(-21\)      B.\(-22\)      C.\(-23\)      D.\(-24\)
061022-12.jpg
isee=freeMaths@知乎

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