分析图 [tex=1.786x1.143]RqGH+hKfnvqX8ToUPtQKQQ==[/tex]所示电路的逻辑功能。[img=182x196]17ad17d97746f23.png[/img][img=151x33]17ad17d5a20e4ca.png[/img]
举一反三
- 分析图 [tex=1.786x1.143]RqGH+hKfnvqX8ToUPtQKQQ==[/tex]所示电路的逻辑功能。[img=222x160]17ad17b6020c92c.png[/img][img=151x33]17ad17b8f020539.png[/img]
- 分析图 [tex=1.786x1.143]RqGH+hKfnvqX8ToUPtQKQQ==[/tex]所示电路的逻辑功能。[img=185x197]17ad17e9a74b630.png[/img][img=197x37]17ad17ec096e32b.png[/img]
- 已知随机变量X的分布列如下:[img=386x130]17e43ec4c459e73.png[/img],则E(X)= A: 17/30 B: m未知,无法求出 C: -30/17 D: -17/30
- 求不定积分[img=132x48]17da6537fc8dad6.png[/img]; ( ) A: -(4*(cos(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) B: (4*(sin(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) C: (4*(cos(x/2)/2 + 2*sin(x/2)))/(17*exp(2*x)) D: (4*(cos(x/2)/2 + 2*cos(x/2)))/(17*exp(2*x))
- 求微分方程[img=143x21]17da5f14490e50e.png[/img]的通解,实验命令为(). A: dsolve(D2y-2*Dy+5*y=sin(2*x),x)ans =exp(x)*sin(2*x)*C2+exp(x)*cos(2*x)*C1+1/17*sin(2*x)+4/17*cos(2*x) B: dsolve('D2y-2*Dy+5*y=sin(2*x)','x')ans =cos(2*x)*(sin(4*x)/17 - cos(4*x)/68 + 1/4) - sin(2*x)*(cos(4*x)/17 + sin(4*x)/68) + C1*cos(2*x)*exp(x) - C2*sin(2*x)*exp(x) C: dsolve(D2y-2*Dy+5*y=sin(2*x),'x','y')ans =exp(x)*sin(2*x)*C2+exp(x)*cos(2*x)*C1+1/17*sin(2*x)+4/17*cos(2*x)