In a chemical equation, the coefficient of substance C is 4 and the coefficient of substance D is 2. What is the ratio of the number of moles of C to D? A. 1:2 B. 2:1 C. 3:1 D. 4:1 相关知识点: 试题来源: 解析 B。系数之比等于物质的量之比,所以 C 和 D 的物质的量之...
解析 For(x^2-1/(2x^2))^2 For( T_(r-1)-(_r^8(x^2)^(1-(1/(2x)))^r T,1 =(8/(15))(1/2)^x⋅2x^(2x) = 2 2 =(8/(15))((-1)/2)^rx^(10) For term in x, 16-5r = 1 5r=15 r=3 Cucofirctrirx=(8/3)(1/2)^3 Coefficient of a = =-7 ...
aFor OECD countries, the coefficient of variation for capital is 25.5% while it is only 4.5% for labour, indicating a great disparity in capital stocks than labour stocks in the region. 为经济合作与发展组织国家,变化参数为资本比辛苦股票是25.5%,当它只是4.5%为劳方时,表明一个巨大差距在股本在...
The Gini coefficient is used to describe an important indicator of the overall income gap between the degree of Is generally accepted that international income distribution is more reasonable when it is 0.3-0.4, 0.4 - 0.5 indicates that the income gap is too large, more than 0.5 means that th...
The coefficient of x in (x-3y)^3 is : (x-3y)^3 का गुणांक है : 02:12 If a^3+1/a^3=52, then the value of 2(a+1/a) is : यदि a^3+1/a^3=52 है... 02:26 If x^2- 4x + 4= 0, then the value of 16(x^4-1/x^4) is...
百度试题 结果1 题目(1) Find the coefficient of the term in x in the expansion of (x) 相关知识点: 试题来源: 解析 For .For tcrm in 反馈 收藏
The coefficient of determination, r squared, in a multiple regression equation is the: a. Coefficient of the independent variable divided by the standard error of regression coefficient. b. Percentage of variation in the dependent variable explained by the variation in the independent variables. c....
1.A number or symbol multiplied with a variable or an unknown quantity in an algebraic term, as 4 in the term 4x,orxin the termx(a+b). 2.A numerical measure of a physical or chemical property that is constant for a system under specified conditions, such as the coefficient of friction...
In statistical analysis, the coefficient of variation (COV) measures relative event dispersion. The COV is equal to the ratio between the standard deviation and the mean. Although COV is most commonly used in comparing relative risk, it may be applied to many types of probability distribution. ...
百度试题 结果1 题目The coefficient of z in(1-x+2x^3)^(10)/s^(960) 相关知识点: 试题来源: 解析 960 反馈 收藏