8. Use V[h(X)]to prove that oax+b = a?oz. Hint: let h(x) = ax + b and...
hint: H3. Let W1 = {ax? + bx² + 25x + a : a, b e R}. (a) Prove that W is a subspace of P3(R). (b) Find a basis for W. (c) Find all pairs (a,b) of real numbers for which the subspace W2 = Span {x} + ax + 1, 3x + 1, x + x} satisfies dim(W. + W2) = 3 and dim(Win W2) = 1. H3. (a) Use Theorem 1.8.1. (b) Let p(x) = ax +...
Let and consider V={x∈R^2 | Ax=5x}. Prove that V is a subspace of R^2, find a basis for V, and determine its dimension.
7. (Lesson 3.5) Let S(x)=-8x+16, if x53 [ax+b, if x>3. Find a and b such that the function(x) is differentiable everywhere. (HINT: First use differentiability to find a. Then use continuity to find b.) M 8 . (Lesson 3.6) Memorize the following integration formulas, then practice using them. Power Rule: If n*-1, then ſx"dx = --***!+C Constant Multiple Rule: ſk. (x)=k[ /[x]cle Sum/Difference Rule: (x)£g(x)}!x = 5 /(x)det g(x) (b) f(6x–3Vx+dr = — (a) dr = — 9. (Lesson 3.6)...
Let g, h be two real-valued convex functions on R. Let m(x) = max{h(x), g(x)). Prove that m(x) is also convex 3.
Fix A and α > 0 and let h(x ) = Ae-oz for x > 0 and 0 otherwise (a) Compute h(k). (b) Let f(x)-(sin5x +sin 3x+sin x +sin 40) for 0 π and 0 otherwise. Comipute f(k). x (c) Plot h * f(x) for 0 Discuss. x π and find interesting values of A ard a Fix A and α > 0 and let h(x ) = Ae-oz for x > 0 and 0 otherwise (a) Compute h(k). (b)...
Q 4.106) 94 CHAPTER 4 Gradient. DIVEI CHAPTER 4 HO Prove V x (Ax B) BV, A)-(A-ViB +AV B B- VA ANSWERS TO 4.jP1 Prove VIA B)B- VIA +(A- ViB + Bx (VxA)+AxIVB. 442 10-4 4.102 Show that A(by 42+d-i+ (3-vk s imotational Find d sach that A-Vd 443, 5.71-i 4.j00 Show that E-r/e is imotational Find & sach that E-y6 and such that dea)0 where a>0 444. (al-4 44040 Suppose A and B are imotational Prove that A x...
Let A be an m × n matrix, let x Rn and let 0 be the zero vector in Rm. (a) Let u, v є Rn be any two solutions of Ax 0, and let c E R. Use the properties of matrix-vector multiplication to show that u+v and cu are also solutions of Ax O. (b) Extend the result of (a) to show that the linear combination cu + dv is a solution of Ax 0 for any c,d...
7. Let A be a 4 x 3 matrix, and let b and y be two arbitrary vectors in R. We are told that the system Ax- b has a unique solution. What can you say about the number of solutions of the system Ax - y? Explain your answer. 8. Let u. v, w, b be arbitrary vectors in R". Suppose that b = x1u+xy+23w for some scalars i, r23. Show that Span u, v, w, b Span u,...
Assume b.1 is proven. Please help prove b.2 (b) Let f: V V be any linear map of vector spaces over a field K. Recall that, for any polynomial p(X) = 0 ¢X€ K[X] and any vE v p(X) p(u) 2ef°(v). i-0 The kernel of p(X) is defined to be {v € V : p(X) - v = 0}. Ker(p(X)) (b.1) Show that Ker(p(X)) is a linear subspace of V. When p(X) = X - A where E K, explain...
Exercise 6 requires using Exercises 4 and 5. Exercise 4. Let a be any real number. Prove that the Euclidean translation Ta given by Ta(x, y)(a, y) is a hyperbolic rigid motion. *Exercise 5. Let a be a positive real number. Prove that the transformation fa: HH given by fa(x, y) (ax, ay) is a hyperbolic rigid motion Exercise 6. Prove that given any two points P and Q in H, there exists a hyperbolic rigid motion f with f(P)...