象函数[img=93x45]18032ecd345b516.png[/img],对应的原函数为
A: [img=113x25]18032ecd3ea2a7e.png[/img]
B: [img=139x25]18032ecd48fbc3e.png[/img]
C: [img=139x25]18032ecd530d37f.png[/img]
D: [img=139x25]18032ecd5de85f3.png[/img]
A: [img=113x25]18032ecd3ea2a7e.png[/img]
B: [img=139x25]18032ecd48fbc3e.png[/img]
C: [img=139x25]18032ecd530d37f.png[/img]
D: [img=139x25]18032ecd5de85f3.png[/img]
举一反三
- 令F(x)：x是学生，G(x)：x迟到过”则“有一些学生没迟到过”可以符号化为（ ）。 A: [img=147x25]18032d8e785c934.png[/img] B: [img=139x25]18032d8e8147cce.png[/img] C: [img=139x25]18032d8e89a3805.png[/img] D: [img=147x25]18032d8e91a8152.png[/img]
- Which of the following propositions is false,set A = {x,x is an integer and[img=60x23]1803a1c6eebb7a3.png[/img]} ? ( ) A: [img=113x25]1803a1c6f77ce06.png[/img] B: [img=139x25]1803a1c7001fe79.png[/img] C: [img=51x22]1803a1c70863f61.png[/img] D: {x|x is an integer and |x| 4}[img=33x22]1803a1c711a7c63.png[/img]
- Which of the following propositions is false,set A = {x,x is an integer and [img=60x23]1803a1c503ffa04.png[/img]} ? ( ) A: [img=113x25]1803a1c50cc3162.png[/img] B: [img=139x25]1803a1c514e60ea.png[/img] C: [img=51x22]1803a1c51dd52ef.png[/img] D: {x|x is an integer and |x| <4} [img=33x22]1803a1c525cf1bd.png[/img]
- “不是每一个实数都是有理数”的逻辑符号化为? 设R(x):x是实数,Q(x):x是有理数。 A: [img=139x25]180366c57a727ee.png[/img] B: [img=165x25]180366c582aa48d.png[/img] C: [img=165x25]180366c58b3d1d5.png[/img] D: [img=139x25]180366c593db471.png[/img]
- “不是每一个实数都是有理数”的逻辑符号化为? 设R(x) ： x是实数， Q(x)： x是有理数。 A: [img=139x25]18038598d11ebf9.png[/img] B: [img=165x25]18038598d917a56.png[/img] C: [img=165x25]18038598e1fed07.png[/img] D: [img=139x25]18038598ea4caae.png[/img]