试用数据选择器CT74LS151实现逻辑函数<img src='https://img2.soutiyun.com/latex/latex.action' />
设函数<img src='https://img2.soutiyun.com/latex/latex.action' />，则y有( )．
求下列逻辑函数的反函数：<img src='https://img2.soutiyun.com/ask/2020-02-20/951087694661952.png' />
逻辑函数<img src='https://img2.soutiyun.com/ask/2021-01-07/978881817978826.png' />当变量的取值为()时,将出现冒险现象.
若函数<img src='https://img2.soutiyun.com/ask/2020-08-13/966178131180276.png' />,则<img src='https://img2.soutiyun.com/ask/2020-08-13/966178120045639.png' />。().此题为判断题(对，错)。
设随机变量(X，Y)的密度函数为<img src='https://img2.soutiyun.com/latex/latex.action' />
由<img src='https://img2.soutiyun.com/latex/latex.action' />，确定可微函数z=z(x，y)(f也可微)，则<img src='https://img2.soutiyun.com/latex/latex.action' />=( )
已知函数<img src='https://img2.soutiyun.com/latex/latex.action' />则下列结论中( )正确．
函数<img src='https://img2.soutiyun.com/ask/2020-02-15/950624584044227.png' />在x=0处( )．
二元函数<img src='https://img2.soutiyun.com/latex/latex.action' />的定义域是( )．
设函数g(x)=1+x，且当x≠0时，<img src='https://img2.soutiyun.com/ask/2020-02-18/950885721858992.png' />，则<img src='https://img2.soutiyun.com/ask/2020-02-18/950885746436467.png' />等于( )
利用Γ函数和B函数的关系，证明<img src='https://img2.soutiyun.com/ask/2021-01-19/979914972490034.png' />
用公式化简下列逻辑函数：<img src='https://img2.soutiyun.com/ask/2020-02-20/951082911647957.png' />
设函数<img src='https://img2.soutiyun.com/ask/2019-12-21/945780553197574.png' />，则( )成立。
设f(x)为连续函数,且满足等式<img src='https://img2.soutiyun.com/shangxueba/ask/51381001-51384000/51383367/97672305236883.png' />则<img src='https://img2.soutiyun.com/shangxueba/ask/51381001-51384000/51383367/976723063701479.png' />=().
变量逻辑函数的卡诺图中，有_________个方格与<img src='https://img2.soutiyun.com/shangxueba/ask/75846001-75849000/75847974/ec145d7-chaoxing2016-15174.jpeg' />对应的方格相邻。
分别用74LS153实现逻辑函数<img src='https://img2.soutiyun.com/ask/2020-08-20/966791648450497.png' />
能使逻辑函数F=(A+B+<img src='https://img2.soutiyun.com/ask/uploadfile/5430001-5433000/3a53819238c30439d563e61de8d067f5.png' />)(A+<img src='https://img2.soutiyun.com/ask/uploadfile/5430001-5433000/7783331a014cc2c1fa4d12cf981342d6.png' />+C)(<img src='https://img2.soutiyun.com/ask/uploadfile/5430001-5433000/6fc75b1462a5beb4fb3c71b588538a82.png' />+B+C)为零的变量(顺序为A，B，C)组合是( )。
试用ROM产生一组“与或”逻辑函数，画出ROM阵列图，并列表说明ROM存储的内容。逻辑函数是：<img src='https://img2.soutiyun.com/ask/uploadfile/5457001-5460000/8cd8171af379436ce177da47f7cd6029.png' />
已知f（x）的原函数为<img src='https://img2.soutiyun.com/shangxueba/ask/18741001-18744000/18743910/2016071616173232033.jpg' />＝（）<img src='https://img2.soutiyun.com/shangxueba/ask/18741001-18744000/18743910/2016071616172745358.jpg' />
将函数f(x)＝x<sup>2</sup>在<img src='https://img2.soutiyun.com/shangxueba/ask/18735001-18738000/18737342/2016071617062459326.jpg' />上展开成余弦级数，其形式为<img src='https://img2.soutiyun.com/shangxueba/ask/18735001-18738000/18737342/2016071617063532608.jpg' /><img src='https://img2.soutiyun.com/shangxueba/ask/18735001-18738000/18737342/2016071617065141640.jpg' />（）<img src='https://img2.soutiyun.com/shangxueba/ask/18735001-18738000/18737342/2016071617071375522.jpg' />
使用3-8线译码器74LS138和必要的门电路实现逻辑函数<img src='https://img2.soutiyun.com/shangxueba/ask/17037001-17040000/17039125/ac78d2f-chaoxing2016-358733.jpeg' />，应该（）。
证明：若f为函数，则<img src='https://img2.soutiyun.com/ask/2020-08-12/966099742187747.png' />
系统的传递函数为<img src='https://img2.soutiyun.com/shangxueba/ask/17991001-17994000/17992371/2018032817055661358.jpg' />，则其幅频特性为（）。<img src='https://img2.soutiyun.com/shangxueba/ask/17991001-17994000/17992371/2018032817060729748.jpg' />
