hatn=(vecA+vecB)/(|vecA+vecB|)If vectors vecA and vecB are 3i -4j + 5k and 2i + 3j - 4k respectively then find the unit vector parallel to vecA + vecB
Answer and Explanation: Given: The first vector is, {eq}\vec A = -3\ \hat i {/eq} The second vector is, {eq}\vec B = 4\ \hat j {/eq} Then the addition of these vectors...Become a member and unlock all Study Answer...
If {eq}\, {\bf c} = \|{\bf a}\|{\bf b} + \|{\bf b}\|{\bf a}, \, {/eq} where {eq}\, {\bf a}, {\bf b},\, {/eq} and {eq}\, {\bf c}\, {/eq} are all nonzero vectors, show that...
百度试题 题目 阅读下面程序: i = 3j = 5while True: if i < 5: i += i print(i) break elif j < 1: j -= j print(j) 上述程序的输出结果是( )。 A.6B.2C.0D.8 相关知识点: 试题来源: 解析 A 反馈 收藏
给出下列代码段inti=3,j;outerwhile(i>0){j=3;innerwhile(j>0){if(j<=2)breakouter;System.out.Println(j+"and"+i);j--;}i--;}下列选项中哪个会被输出到屏幕() A.3and3 B.3and2 C.3and1 D.3and0该题目是单项选择题,请记得只要选择1个答案!
阅读下面程序:I = 3J = 5While True:If i < 5:I += iPrintireakElif j < 1:J -= jPrintj上述程序的输出结果是 。;8;2;6;0
百度试题 结果1 题目If a=i+j+k, b=2i-j+3k, c=-i+3j-k find a+b 相关知识点: 试题来源: 解析 3i+4k 反馈 收藏
If 4i + 7j + 8k, 2i + 3j + 4k, 2i + 5j + 7k are position vectors of A, B, C of Delta ABC then position vector of the point where the bisector of angle A meets
题中For循环执行三次,循环变量分别为i=1,i=2,i=3,其内部嵌套Do While循环,循环条件分别为j <=5,j <=4,j <=3,当a(j) > a(j + 2)时,将a(j) 和 a(j + 2)互换,程序运行结束后,数组值依次为1,0,10,12,13,12,14,故D选项正确。其余选项均不符合题意。