if the coefficient of (2r+1)th term and (r+2)th term in the expansion of (1+x)43 are equal then r=? A14 B30 C41 D42Submit (2) If the coefficients of (2r + 4)th, (r - 2)th terms in the expansion of (1+x)18 are equal, find r. View Solution If the coefficients of...
If the coefficient of(2r+4)thterm and(r−2)thterm in the expansion of(1+x)18are equal then find r. View Solution Free Ncert Solutions English Medium NCERT Solutions NCERT Solutions for Class 12 English Medium NCERT Solutions for Class 11 English Medium ...
aThe coefficient of variation is another statistic variation degree of the observation values measured data. When comparing two or more data variation degree, if the metric units are the same and the average standard deviation, can be directly used to compare. If the unit and (or) the average...
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方程和函数equation方程solution, root, zero解 variable变量constant常量(数) term 项 coefficient 系数4. 数列和集合arithmetic progression等差数列 geometric progression等比数列 set集合subset 子集 s 44、equence 序列 term 序列中的项inclusive包含序列的首末项exclusive不包含序列的首末项5. 排列组合与概率...
题目66. If in th e expans sinof(1+x)^(20) th e coefficient of th e rth and (r+4)'h term are equal then th e valu e of r will b e : (2)(1)10(2)9 (3)8 e (4) 7 相关知识点: 试题来源: 解析 (2) 反馈 收藏 ...
The number of standard deviation units a score falls above or below the mean defines its a. median. b. correlation coefficient. c. z-score. d. average. If you add (or subtract) the same number of points to all the scores in a distrib...
The tooth root is pulled the side the bending gatigue stress not to surpass the gear permitting with bending stress 235MPa, namely the tooth root actual receives the biggest Mises equivalent stress is smaller than 235MPa; According to the design request, the tooth width coefficient takes 0.22~...
If the coefficients of(2r+1)thand(4r+5)th terms is the expansion of(1+x)10are equal thenr=? View Solution if the coefficient of rth (r+1) th and (r+2)th terms in the expansion of(1+x)nare in A.P. then correct statements is : ...