举一反三
- 设 [tex=4.929x1.286]24fVQLH1rIGoLdcOSPJam/9iN2ee7G659O4mkjqiFQQ=[/tex], 试问在什么条件下才能保证下列等式成立:(1) [tex=7.143x1.286]OIvu2RAPT/M8dkzpI5C0M77D1AEXeG/brWHAEeYdauU=[/tex] ;(2) [tex=7.143x1.286]RTGQXIMi+ABJ6mCcg6dOoVllUb8Snd1mA425GFxcbow=[/tex] ;(3) [tex=7.143x1.286]QA6LejCV0N5UypiOmPvvjU3eI7Fcs8v5JfobZwd/3W8=[/tex] .
- [tex=29.714x1.286]COTWvTe4FluYL1m67Q4ogAWay9ONVr/ZxbvMRe4Wig5g/wCOR0BW34jMGRZ+gbiUluyJ4BBfUn2BTmieLIo5H5CkBMfVhqyMbqtcf8/uGI6E5gVp7rmRFVsmz35duQTqov8wkIdWqyHq6dCdj7Skhw==[/tex] 未知类型:{'options': ['[tex=7.143x1.286]PYBotsoGaTzVwZoccdvi/ekKWEEo1MU/tQeME9AQ02M=[/tex]', '[tex=8.643x1.286]HW6jQe0rFdriU52ewNJoEefqmIkMbzSME3xMvGwqZtM=[/tex]', '[tex=7.143x1.286]W1W+FOsYL3GLTNozTU6ivKrqXOadkSviyv8U/8rmbOY=[/tex]', '[tex=7.143x1.286]MpobPWzbypac3r+7ZoAfxiqNZXyQmtWnVv2CDH4C1/Q=[/tex]'], 'type': 102}
- 设[tex=5.929x1.071]gAFI4ZzNAmjFfJAphmTsRQ==[/tex],若[tex=7.786x1.357]09fTpcwFMVcu1qrv9hyVbjaVP6Nu0Q7b0o9JCaEhfzk=[/tex],[tex=7.786x1.357]17Fg+KbtgLZdNaerla1J+g==[/tex],[tex=7.714x1.357]GzWWzGNDry0+/hdju2Gv5Q==[/tex],那么[tex=0.571x0.786]/uIIzJZ/1DPgc5sOsRpAXQ==[/tex],[tex=0.571x1.0]Tr41q2//n6lfFMLRmh8s0w==[/tex],[tex=0.5x0.786]rGd4FFr4Zsu+cuz6gxITMA==[/tex]的大小关系为 A: x<y<Z B: y<z<x C: z<x<y D: z<y<x E: 不能确定
- 若有int x,y,z;,则执行以下程序段后的输出结果为:x=1;y=3;z=5;if(x>;y)x=y;y=z;printf("x=%d,y=%d,z=%d",x,y,z); A: x=1,y=5,z=5 B: x=1,y=3,z=3 C: x=5,y=3,z=5 D: x=5,y=3,z=3
- intx=5,y=8,z=7;表达式z=!(x>y)||(x=1,y=3)计算后的结果 A: x=1,y=3,z=1 B: x=1,y=3,z=0 C: x=5,y=8,z=0 D: x=5,y=8,z=1
内容
- 0
Thegraphoff(x)=x<sup>2</sup>istranslated2unitsdownand4unitsleft.Iftheresultinggraphrepresentsg(x),theng(-5)=______. A: -1 B: 3 C: 45 D: 79 E: 81
- 1
执行以下语句的结果:dict1={"x":1,"y":2,"z":3}dict2={"x":4,"a":5}dict1.update(dict2) A: {"x":1,"y":2,"z":3,"x":4,"a":5} B: {"x":4,"a":5,"x":1,"y":2,"z":3} C: 有重复项,结果有误! D: {"x":4,"y":2,"z":3,"a":5}
- 2
函数 [img=197x96]1803dbfc46ca27a.png[/img]表示的曲面称为椭圆锥面,绘制这个曲面的程序是: A: s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x.^2+y.^2);mesh(x,y,z) B: a=3;b=2;s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x.^2/a/a+y.^2/b/b);mesh(x, y, z) C: a=3;b=2;s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x.^2/a*a+y.^2/b*b);mesh(x, y, z) D: a=3;b=2;s=-5:0.1:5;t=-5:0.1:5;[x, y]=meshgrid(s, t);z=sqrt(x^2/a/a+y^2/b/b);mesh(x, y, z);
- 3
下面函数定义并调用后,能产生正确结果的是?def f(x,y=5,z=3): pass A: f(5,x=1,z=3) B: f(x=1,y=5,z=6) C: f(1,,z=3) D: f(x=1,2)
- 4
某人对商品x的需求函数是[tex=5.214x1.214]0m6eBd5eyK0NjuxeKfwtIw==[/tex],[tex=4.214x1.214]I717YsPbj8Rnym1v2XQ+sFNkUl7mqUsGwbjwjXmy2xc=[/tex],这里[tex=0.571x1.0]Za328cIB4SeR7rrzY+MM5Q==[/tex]是[tex=0.571x0.786]ZSLOI4fiO1oAbVC5M8IVkA==[/tex]的价格。如果商品x 的价格是0.5元,那么他对商品x的需求价格弹性是 未知类型:{'options': ['-10', '- 1/5', '-1/10', '\xa0- 1/3'], 'type': 102}