判断向量组[tex=5.429x2.071]DhkZQ6U+YNvBth9C/XILFMuyTkrIFxkmeUNyW8fUmDY=[/tex],[tex=5.357x2.071]lenZbrFoHxv5kjVjiyqqVkBnaXSxxjf2Y4MOogWnen0=[/tex],[tex=7.643x1.714]ei6OOqz7fGydc/UBHxpRORo0UsTlIJKOh405MJwDBh7wNWleXkHDl9kl22+udwbzaegR3z0RLjWPPRnQOjl2tw==[/tex],[tex=7.643x1.714]IbghfoX/HIVbusiB7s7zXOzC9mhpiMjRn7MQBGbgH/S/V/jMHitEMCg+sLOOTANzpcGDLWXlkfaz50RJSeWUWg==[/tex].线性相关还是线性无关,要求说明理由(其中[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex], [tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex], [tex=0.5x0.786]EL0hSqs6jZBGdsmH7TMShQ==[/tex], [tex=0.571x1.0]1GNMN/euvQoeKc/ZwvRQhg==[/tex]为互异的数)
举一反三
- 找出不全为零的三个有理数[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex],[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex],[tex=0.5x0.786]EL0hSqs6jZBGdsmH7TMShQ==[/tex](即[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex],[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex],[tex=0.5x0.786]EL0hSqs6jZBGdsmH7TMShQ==[/tex]中至少有一 个不是 0),使得[tex=18.643x1.357]KyXXoTQg7oYN9VhCCaNIRxTyt0RSmAxNq0orMlKH1Luyp7BE5JHnaIjEvpSd3+kP[/tex]
- 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
- 令[tex=1.857x1.357]bZ4KhrFbnCaidqbMGQZfww==[/tex]与[tex=1.857x1.357]fBOYuAIZ/H4m1Dx+my86tg==[/tex]是[tex=1.786x1.357]2pFrMmryE2cRTmNCb4YNBA==[/tex]的多项式,而[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex],[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex],[tex=0.5x0.786]EL0hSqs6jZBGdsmH7TMShQ==[/tex],[tex=0.571x1.0]1GNMN/euvQoeKc/ZwvRQhg==[/tex]是[tex=0.643x1.0]0WA5oCO54gKWR/jKi5M2Zw==[/tex]中的数,并且[tex=4.857x1.286]VKg59dPfA6nqhEFkHGlVelmjpufgRNtMtSdYPrwUWZg=[/tex]证明:[tex=17.357x1.357]knf/H9twnqP9r3c2T5nHB0UJot5wU0gU8dTeUuP3qpk7MsoNyPD9qqVztGFrD29+[/tex]
- 今有[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex],[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex],[tex=0.5x0.786]EL0hSqs6jZBGdsmH7TMShQ==[/tex],[tex=0.571x1.0]TcM6B5Wrs5vy9dWrxRPSdg==[/tex],[tex=0.5x0.786]WKYr2kz69xrVCyPvbyVG1w==[/tex],[tex=0.5x1.214]0K9Xf7VHWdVeOrSYAKIm6Q==[/tex],[tex=0.5x1.0]wLRBXo571ziKptAIyBBTRQ==[/tex]7个人,已知下列事实:[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex]会讲英语;[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]会讲英语和汉语;[tex=0.5x0.786]EL0hSqs6jZBGdsmH7TMShQ==[/tex]会讲英语、意大利语和俄语;[tex=0.571x1.0]TcM6B5Wrs5vy9dWrxRPSdg==[/tex]会讲日语和汉语;[tex=0.5x0.786]WKYr2kz69xrVCyPvbyVG1w==[/tex]会讲德语和意大利语;[tex=0.5x1.214]0K9Xf7VHWdVeOrSYAKIm6Q==[/tex]会讲法语、日语和俄语;[tex=0.5x1.0]wLRBXo571ziKptAIyBBTRQ==[/tex]会讲法语和德语。试问这7个人要围成一圈,应如何排座位,才能使每个人都能和他身边的人交谈?
- 对于下列的整数[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex],[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex],分别求出以[tex=0.571x0.786]7G1MINzwputr5mgALyjQfA==[/tex]除[tex=0.429x1.0]JThLUuJ8WswSAPiYZWihWg==[/tex]所得的商和余数:[tex=2.357x1.0]7/xQUJGC15IOp5FzPAgeAg==[/tex],[tex=3.5x1.143]tasuxjk4jcE45xaNlc1/RQ==[/tex]