数学每日一练
8.241．（2014
山东）函数
<Object: word/embeddings/oleObject1.bin>
的定义域为
A．<Object: word/embeddings/oleObject2.bin>
B．<Object: word/embeddings/oleObject3.bin>
C．<Object: word/embeddings/oleObject4.bin>
D．<Object: word/embeddings/oleObject5.bin>
2.（2019全国Ⅱ文
6）设f(x)为奇函数，且当
x≥0时，f(x)=<Object: word/embeddings/oleObject6.bin>
，则当x<0时，f(x)=A．<Object: word/embeddings/oleObject7.bin>
B．<Object: word/embeddings/oleObject8.bin>
C．<Object: word/embeddings/oleObject9.bin>
D．<Object: word/embeddings/oleObject ...