举一反三
- For the truth table below, the minimum SOP expression is下面真值表对应的最简“与或”式为：[img=196x285]18031a23823109a.jpg[/img] A: X=A'BC+AB'C+ABC' B: X=AB+AC+BC C: X=A'B+AC+BC' D: X=A'B'C+AB'C'+A'BC'
- The following expression of "horse" illustrates the __________________________ meaning.[img=1169x509]18030d3bbee3e62.png[/img]
- Using Boolean algebra, simplify the following expressions:[img=228x26]1803b2765531f84.png[/img]
- 设事件A与B相互独立,且[img=76x21]17da6268852f48b.png[/img], [img=76x21]17da62689886877.png[/img],则[img=75x25]17da6268c45e3e0.png[/img]( ) A: 0.72; B: 0.58; C: 0.88; D: 0.82;
- 微分方程[img=108x26]1803a288dda2418.png[/img]的一个特解应具有形式（ ）. A: [img=66x21]1803a288e600371.png[/img] B: [img=86x21]1803a288ee1dd14.png[/img] C: [img=76x21]1803a288f6af6ea.png[/img] D: [img=76x21]1803a288ff928cb.png[/img]
内容
- 0
方程[img=153x25]1803dda158537e8.png[/img]表示的球面的球心坐标是: A: [img=68x21]1803dda161fd2cf.png[/img] B: [img=68x21]1803dda16b02104.png[/img] C: [img=76x21]1803dda17328cad.png[/img] D: [img=76x21]1803dda17b34776.png[/img]
- 1
设[img=215x27]1803b693bb7572e.png[/img]，且X与Y相互独立，则[img=76x21]1803b693c3778b9.png[/img] A: [img=54x25]1803b693cb7816d.png[/img] B: [img=63x25]1803b693d3eafb1.png[/img] C: [img=68x25]1803b693dc2bc66.png[/img] D: [img=63x25]1803b693e3a3028.png[/img]
- 2
如果微分方程[img=76x21]17e0a706938fb94.png[/img]能变成[img=113x21]17e0a68e5711413.png[/img],则[img=76x21]17e0a706938fb94.png[/img]是可分离变量的微分方程. ( )
- 3
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]
- 4
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]