Problem 1QCE: 3,1,26,0,5= Problem 2QCE: Suppose that u, v, and w are vector in 3-space such that u=5,uv=7,anduw=3. auu=bvu=cuvw=du2w= Problem 3QCE Problem 4QCE: The direction cosines of2,1,3arecos=,cos=,andcos=. Problem 5QCE Problem 1ES Problem 2ES Problem 3ES Problem 4ES: Does the tringle in 3-space with vertices 1,2,3,2,2,0,and3,1,4 have an obtuse angle? Justify your... Problem 5ES: The accompanying figure shows eight vector that are equally spaced around a circle or radius 1. Find... Problem 6ES: The accompanying figure shows six vector that are equally spaced around a circle of radius 5. Find... Problem 7ES: (a) Use vectors to show that A2,1,1,B3,2,1,andC7,0,2 are vertices of a right tringle. At which... Problem 8ES Problem 9ES: In each part, determine whether the given expression makes sense. Explain your answers.... Problem 10ES: The first, second, and third component of the “price vector� p=$479.99,$799.99,$1099.99 denote... Problem 11ES: The i, j, and k component of the “race vector� t=1.2i+56j+13.1k denote the distance ( in miles)... Problem 12ES: Let u=1,2,v=4,2,andw=6,0. find au7v+wbuwwcuvwduvw. Problem 13ES: Find r so that the vector from the point A1,1,3 to the point B3,0,5 is orthogonal to the vector from... Problem 14ES: Find two unit vector in 2-space that make an angle of with 45 with 4i+3j. Problem 15ES: Find the direction cosines of v and confirm that they satisfy Equation (5). Then use the direction... Problem 16ES Problem 17ES: Show that the direction cosines of a vector satisfy cos2+cos2+cos2=1 Problem 18ES: Let and be the angles shown in the accompanying figure. Show that the direction cosines of v can... Problem 19ES: The accompanying figure shown a cube. (a) Find the angle between the vector d and u to the nearest... Problem 20ES: Show the two nonzero vectors v1andv2 are orthogonal if and only if their direction cosines satisfy.... Problem 21ES Problem 22ES: Find, to the nearest degree, the acute angle formed by two diagonals of a cube. Problem 23ES: Find, to the nearest degree, the angles that a diagonal of a box with dimensions 10 cm by 15 cm by... Problem 24ES: In each part, find the vector component of v along b and the vector component of v orthogonal to b.... Problem 25ES Problem 26ES: Express the vector v as the sum of a vector parallel to b and a vector orthogonal to b.... Problem 27ES: Express the vector v as the sum of a vector parallel to b and a vector orthogonal to b.... Problem 28ES: Determine whether the statement is true or false. Explain your answer. Ifab=acanda0,thenb=c. Problem 29ES: Determine whether the statement is true or false. Explain your answer.... Problem 30ES: Determine whether the statement is true or false. Explain your answer. If u is a unit vector that is... Problem 31ES: Determine whether the statement is true or false. Explain your answer. If v and b are nonzero... Problem 32ES Problem 33ES: Use the method of Exercise 32 to find the distance from the point P3,1,2 to the line through... Problem 34ES Problem 35ES: For the child in Exercise 34, estimate how much force must be applied in the direction of Q (shown... Problem 36ES: Suppose that the slide in Exercise 34 is 4 m long. Estimate the work done by gravity if the child... Problem 37ES Problem 38ES Problem 39ES Problem 40ES Problem 41ES: Let u and v be adjacent sides of a parallelogram. Use vectors to prove that the diagonals of the... Problem 42ES: Let u and v be adjacent sides of a parallelogram. Use vectors to prove that the parallelogram is a... Problem 43ES Problem 44ES Problem 45ES: Show that if v1,v2,andv3 are mutually orthogonal nonzero vectors in 3-space, and if a vector v in... Problem 46ES: Show that the three vectors v1=3ij+2k,v2=i+jk,v3=i5j4k are mutually orthogonal, and then use the... Problem 47ES: For each x in ,+, be the vector from the origin to the point Px,y on the curve y=x2+1, the vector... Problem 48ES: Let u be a unit vector in the xy-plane of an xyz-coordinate system, and let v be a unit vector in... Problem 49ES: Prove parts (b) and (e) of Theorem 11.3.2 for vectors in 3-space. Problem 50ES: Discuss some for the similarities and differences between the multiplication properties of real... format_list_bulleted