3. Let ū and ū be vectors. Prove that ū x ū is orthogonal to both...
5. Let ū and w be vectors in R3. Prove that (ö - w) x (v + 2) = 2(vx w).
4. Let ū, w be vectors. Prove the Parallelogram Law: || + 2011? + || D – ||2 = 2 || || 2 + 2 ||0||2.
3. If ū= 4.2,1 and ū= -2.2.1), find a vector in R3 that is orthogonal to both ū and . Answer: 4. Let A, B and C respectively denote the points (1,1,2), (-3, 2, 1) and (4, -2, -1). Find AB, AC and AB X AC. Answer: AB= AC = 1. AB X AC = 5. (a) Find the equation of the plane containing the points A, B and C above. Answer: (b) Check that your answer to (a) above...
C3 Let Vị and V2 be orthogonal vectors in R”. Prove that ||71 + 72|12 = ||1 ||- + ||72|12.
Problem 9. Determine if the following pair of vectors are orthogonal. -3 13 -3 0 -7'0 25 -22.5 Problem 10. Prove the parallelogram law: where u and are vectors in IR Problem 11. Suppose a vector r is orthogonal to both vectors y and z. Prove that r is orthogonal to any vector in spany,
5 3 1 Let ū = < 2,-3> V = <-2,0 > w = <3,3 > Graph vectors ū, ū, and w in standard position with corresponding terminal points, A, B, and C, respectively. (72 point) What is the length of the altitude of AABC from vertex A? (72 point) -5 -3 -1 -1 0 1 3 5 -3 -5
Given the following vectors: ū= 3 ū= W = > (a) Find the projection of ū onto ū. BOX YOUR ANSWER. (b) Find the projection matrix of the projection in part (a). BOX YOUR ANSWER. (c) Find the projection of ū onto the subspace V of R3 spanned by ✓ and W. (You may use MATLAB for matrix multiplication in this part, but you must provide the expressions in terms of matrices.) BOX YOUR ANSWER. (d) Find the distance from...
(10) Let ū ER. Show that M = {ū= | ER*:ūū= 0) is a subspace of R'. Definition: (Modified from our book from page 204.) Let V be a subspace of R". Then the set of vectors (61, 72, ..., 5x} is a basis for V if the following two conditions hold. (a) span{61, 62,...,x} = V (b) {61, 62, ..., 5x} is linearly independent. Definition: Standard Basis for R" The the set of vectors {ēi, 72, ..., en) is...
3 - 2 Let u= Note that {u, v, w} is an orthogonal set of vectors and w - -3 4 9 be a vector in subspace W, where W = Span{u, v, w}. Let y= 11 -27 Write y as a linear combination of u, v, and uw, i.e. y = ciu + cqũ + c3W. Answer: y=
3. Given pairwise orthogonal vectors u, v, w ER(each vector is orthogonal to every other), with || || = ||0|| = ||w|| = 1, and C1, C2, C3 € R, prove that || Cu + c2v + c3w||2 = cſ + cx+cz.