百度试题 结果1 题目 Prove that: (1) (2) 相关知识点: 试题来源: 解析 (1)Proof. (2)Proof. 反馈 收藏
Did you know that 1 = 2? Think that sounds ridiculous? OK, I'll prove it to you. Then I'll show you why this "proof" is indeed, as you suspected, ridiculous. And we'll see what it all has to do with the number zero.
Prove that1⋅2+2⋅3+3⋅4+...+n⋅(n+1)=n(n+1)(n+2)3 View Solution Value of :13+23+33++n3= View Solution Prove that :12+22+32++n2=n(n+1)(2n+1)6 View Solution Prove that11⋅22⋅33...nn≤(2n+13)n(n+1)2. View ...
Prove that (-1,2,3), (4,0,-1) and (14, -4, -9) are collinear and hence find the ratio in which divides [(CA)]. 相关知识点: 试题来源: 解析 ((AB))=(pmatrix)5-2-4(pmatrix) ((BC))=(pmatrix)10-4-8(pmatrix)=2(pmatrix)5-2-4(pmatrix) ∴\ ((BC))=2(...
Then, the points E3, F3 and G3 lie on the curve x+y=4 (b) (x−4)2+(y−4)2=16 (c) (x−4)(y−4)=4 (d) xy=4 View Solution Prove that 123nC1+12+225nC211+22+327nC3+ +12+22++n2(2n+1)nCn=n(n+3)62n−2. 05:59View Solution C0−2.C1+3.C2…..+(−...
结果1 题目 英语翻译 prove that (1,3),(4,2)and (-2,-6) are vertices of a right triangle and specify the vertex at which the right angle occurs. find the equation for the line that is perpendicular bisector of the line segment joining (2,8) and (-4,6) 相关知识点: 试题...
结果1 题目 A student is trying to prove that 1+x^2<(1+x)^2.The student writes:(1+x)^2=1+2x+x^2.So 1+x^2<1+2x+x^2.Identify the error made in the proof. 相关知识点: 试题来源: 解析 The assumption is that x is positive. 反馈 收藏 ...
英语翻译prove that (1,3),(4,2)and (-2,-6) are vertices of a right triangle and specify the vertex at which the right angle occurs.find the equation for the line that is perpendicular bisector of the line segment joining (2,8) and (-4,6)
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【题目】1. Prove that the set( 1, 2, " 1989) can be expressed as the disjoint union of subsets (i 1,2,…,117)such that (Each A contains 17 elements (ii The sum of all the elements in each A is the same.(PHD)1.试将集合{1,2,…,1989}分为117个互不相交的子集A(i=1,2...