📅  最后修改于: 2021-06-22 22:42:34        🧑  作者: Mango

问题8.找到集合A，B和C，使得A∩B和B∩C和A∩C是非空集，并且A∩B∩C = ϕ解决方案：Let us consider the sets,A = {5, 6, 10}B = {6, 8, 9}C = {9, 10, 11}Now, we have,A ∩ B = 6 ≠ ϕB ∩ C = 9 ≠ ϕA ∩ C = 10 ≠ ϕAnd, A ∩ B ∩ C = ϕNow, we have A...

📅  最后修改于: 2021-06-22 22:44:13        🧑  作者: Mango

问题1.如果连接点P(x1，y1)和Q(x2，y2)的线段在原点O处对角,，则证明OP.OQcos∅= x1x2+ y1y2。解决方案：Since, O is the origin, we can get, OP2= x12+ y12and OQ2= x22+ y22Also, by the distance formula we know distance between two points ...

📅  最后修改于: 2021-06-22 22:46:09        🧑  作者: Mango

问题1表明的总和(M + N)个和第(m – n)的AP的第方面等于第m个项的两倍。解决方案：Let the first term and common difference of the A.P. be a and d respectively.(m+n)thterm of the A.P. = a+(m+n−1)d(m−n)thterm of the A.P. = a+(m−n−1)dThus...

📅  最后修改于: 2021-06-22 22:49:03        🧑  作者: Mango

解决练习1至6中的不平等问题。问题1. 2≤3x – 4≤5解决方案：In this case, we have two inequalities, 2 ≤ 3x – 4 and 3x – 4 ≤ 5, which we will solve simultaneously.We have2 ≤ 3x – 4 ≤ 5or 2 ≤ 3x – 4 and 3x – 4 ≤ 5⇒ 2 + 4 ≤ 3x a...

📅  最后修改于: 2021-06-22 22:49:41        🧑  作者: Mango

线性不等式是包含线性函数的不等式。当两个不等式由单词“ and”连接时，当两个不等式在相等的时间为真时，就会出现答案。但是，当两个不等式由单词“或”连接时，当其中一个不等式为真时，就会出现解决方案。解决方案是两个单独解决方案的组合或结合。复合不等式复合不等式是通过“AND”或“OR”组合两个简单不等式的不等式。带“ AND”的复合不等式表明，这两个陈述之一在本质上是正确的。如果对于复合不等式的各个...

📅  最后修改于: 2021-06-22 22:50:15        🧑  作者: Mango

问题1：A线穿过点A(1、2)，与x轴成60°角，并在点P处与x + y = 6线相交。找到AP。解决方案：Given: (x1, y1) = A (1, 2) and θ = 60°By using the formula, the equation of the line is given by:(x – x1) / cosθ = (y – y1) / sinθ = rWhen we subs...

📅  最后修改于: 2021-06-22 22:50:51        🧑  作者: Mango

问题1.一枚硬币被扔一次。写下其样本空间。解决方案：Since, a coin has two faces either head or tails. So, if the coin is tossed it will land on either of these two sides. Hence, sample space will be given as:S = { H, T }, wher...

📅  最后修改于: 2021-06-22 22:51:43        🧑  作者: Mango

问题1.找到点(4，5)与直线3x – 5y + 7 = 0的距离解决方案：From question, we have,The line: 3x – 5y + 7 = 0By comparing ax + by + c = 0 and 3x − 5y + 7 = 0,a = 3, b = − 5 and c = 7So, the distance of the point (4, 5) from...

📅  最后修改于: 2021-06-22 22:53:01        🧑  作者: Mango

求解以下每个方程式：问题1. x2+ 3 = 0解决方案：We have,x2+ 3 = 0 or x2+ 0 × x + 3 = 0 —(1)Discriminant, D = b2– 4acfrom (1) , a = 1 , b = 0 and c = 3D = (0)2– 4*(1)*(3)D = -12Since , x =Therefore ,x =x =x = ± √3 iHence...

📅  最后修改于: 2021-06-22 22:53:35        🧑  作者: Mango

问题1.如果(x / 3 + 1，y – 2/3)=(5/3，1/3)，则求出x和y的值。解决方案：We know that,If two ordered pairs are equal, then their corresponding first elements and second elements are equal.We are given that the pairs (x/3 + ...

📅  最后修改于: 2021-06-22 22:55:22        🧑  作者: Mango

评估以下限制：问题1解决方案：We know ifsuch thatexists, thenWe have,=== ex为什么编程需要懂一点英语问题2。解决方案：We have,======为什么编程需要懂一点英语问题3。解决方案：We have,========== e0= 1为什么编程需要懂一点英语问题4。解决方案：We have,======== e1−0= e为什么编程需要懂一点英语问题5...

📅  最后修改于: 2021-06-22 22:57:53        🧑  作者: Mango

关于x区分以下函数：问题1解决方案：By using quotient rule, we get,====为什么编程需要懂一点英语问题2。解决方案：By using quotient rule, we get,====为什么编程需要懂一点英语问题3。解决方案：By using quotient rule, we get,====为什么编程需要懂一点英语问题4。解决方案：By using quoti...

📅  最后修改于: 2021-06-22 22:58:50        🧑  作者: Mango

问题1计算以下分布的中位数的平均偏差：Class0-1010-2020-3030-4040-50Frequency51020510解决方案：Calculating the median:Median is the middle term of the observation in ascending order, Xi,Here, the middle term is 25.Therefore, ...

📅  最后修改于: 2021-06-22 22:59:18        🧑  作者: Mango

问题1.找到一条与x轴成150度角并从y轴截取截距2的直线的方程。解决方案：Given, slope, m = tan (150°) ⇒ m = -1/√3, also, y-intercept = (0,2)We know that equation, of a line is given as y = mx+ c, m is the slope and c is the intercept t...

📅  最后修改于: 2021-06-22 23:01:53        🧑  作者: Mango

问题1.以下哪一项不能有效分配样本空间结果基本事件的概率S = {w1，w2，w3，w4，w5，w6，w7}：基本事件是：w1w2w3w4w5w6w710.10.010.050.030.010.20.621/71/71/71/71/71/71/730.70.60.50.40.30.20.141/142/143/144/145/146/1415/14解决方案：We know that  the va...