2025年教学资料:3.3.2 函数的奇偶性(分层作业)(解析版)
3.3.2函数的奇偶性同步练习1.偶函数的图象关于轴对称,下列图象中,可以表示偶函数的是( ).A.B.C.D.【答案】A【分析】根据图像是否关于轴对称判断.【详解】A的图像关于轴对称,故A符合题意.BCD的图像都不关于轴对称,故BCD均不符合题意.故选:A.2.下列函数是偶函数的是( A )A.y=2x2-3 B.y=x3C.y=x2,x∈[0,1] D.y=x[解析] 对于A:f(-x)=2(-x)2-3=2x2-3=f(x),所以f(x)是偶函数,B,D都为奇函数,C中定义域不关于原点对称,函数不具备奇偶性.3.下列函数中,在其定义域内,既是奇函数又是减函数的是( ...
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