← 上一题 返回专题 下一题 → 已知函数 f ( x ) = x 2 − cos x f\left( x\right) = {x}^{2} - \cos x f ( x ) = x 2 − cos x ,则 f ( ln 2 2 ) f\left( \frac{\ln 2}{2}\right) f ( 2 l n 2 ) , f ( − ln 3 3 ) f\left( {-\frac{\ln 3}{3}}\right) f ( − 3 l n 3 ) , f ( − ln 5 5 ) f\left( {-\frac{\ln 5}{5}}\right) f ( − 5 l n 5 ) 的大小关系为( ) A. f ( ln 2 2 ) < f ( − ln 3 3 ) < f ( − ln 5 5 ) f\left( \frac{\ln 2}{2}\right) < f\left( {-\frac{\ln 3}{3}}\right) < f\left( {-\frac{\ln 5}{5}}\right) f ( 2 l n 2 ) < f ( − 3 l n 3 ) < f ( − 5 l n 5 ) B. f ( ln 2 2 ) < f ( − ln 5 5 ) < f ( − ln 3 3 ) f\left( \frac{\ln 2}{2}\right) < f\left( {-\frac{\ln 5}{5}}\right) < f\left( {-\frac{\ln 3}{3}}\right) f ( 2 l n 2 ) < f ( − 5 l n 5 ) < f ( − 3 l n 3 ) C. f ( − ln 5 5 ) < f ( ln 2 2 ) < f ( − ln 3 3 ) f\left( {-\frac{\ln 5}{5}}\right) < f\left( \frac{\ln 2}{2}\right) < f\left( {-\frac{\ln 3}{3}}\right) f ( − 5 l n 5 ) < f ( 2 l n 2 ) < f ( − 3 l n 3 ) D. f ( − ln 3 3 ) < f ( − ln 5 5 ) < f ( ln 2 2 ) f\left( {-\frac{\ln 3}{3}}\right) < f\left( {-\frac{\ln 5}{5}}\right) < f\left( \frac{\ln 2}{2}\right) f ( − 3 l n 3 ) < f ( − 5 l n 5 ) < f ( 2 l n 2 )
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