Find the unit vectors that are parallel to the tangent line to the curve y = 8 sin xat the point (π/6,4).(Enter your answer as a comma-separated list of vectors.)

is the vector a=i+2J-2ka veit vector?if not find the unit vector having the same direction as a? is the vector a=i+2J-2ka veit vector?if not find the unit vector having the same direction as a?字母上面是向量~ 空间向量问题,其实不复杂,但我答案总是不对.Find a unit vector in the空间向量问题,其实不复杂,但我答案总是不对.Find a unit vector in the same direction of || a x b|| given that a = (1,-2,3) and b = (3,2,-1) 英语翻译What is the physical relation between any two points inside the velocity vector-space?Find a unit vector which points directly halfway between the directions of the two vectors A=5X - 3Y and B=4X -7Y +5Z . A unit vector parallel to vector (2,-3,6) is vector?答案选（-0.29,0.43,-0.86） 英语 I find unit 1------(is) the most difficult高手入内 英语翻译denote the unit vector n of S as the normal direction from medium 1 to medium 2 and take the surface integral in maxwell'equations over the closed surface of a small cylinder Find these words from this unit can't find unit system shishenmeyisi matlab中find函数参数代表什么意思?我看过help,但有些不懂.看下面代码,请指教X =3 2 0-5 0 70 0 1 [r,c,v] = find(X>2)returns a vector of row indices of the nonzero entries of N where N=(X>2)r =12a vector of column indices of the In the bottom compartment will find our 4 tubes UV unit square,这句英文翻译成汉语是什么意思 matlab向量问题If P1 is (1,2,3) and P2 is (-4,0,5),find(a) The vector equation of the line P1P2(b) The shortest distance between the line P1P2 and point P3(7,-1,2) 请帮忙解这个数分的题Find an analytic (symbolic) description of the mapping that assigns to a non-zero vector x∈ Rn the vector of length 2 that points in the direction opposite to x.In case n = 3 ,that is if x = (x,y,z) ,determine the comp the sum of the digits of two number is 12.the tens digits is twice the unit digit.find the number 十万火急～.1) A particle initially located at the origin has an acceleration of = 2.00 m/s2 and an initial velocity of 0 = 7.00 m/s.(a) Find the vector position at any time t (where t is measured in seconds).(____t + ____t2 ) mFind the vector ve 大哥大姐们! 求解法! 关于 向量和 矩阵的! 好了高分追加! 谢谢谢谢!副中英文版Question: pick any numbers that add to x+y+z=0. Find the angle between your vector v=(x,y,z) and the vector w=(z,x,y) Challenge question: Explain 请找出这段英文的语法错误?By analyzing the status quo of Beijing’s monitoring and control of vector for past 30 years,find out the existing problems,and propose solutions to these problems.Consult historical informations about Beijing’ Unit 8 is eighth unit and Unit 9 is the ninth unit.(哪里错了) after switching off the unit