2. Let A = (cos, sin and B = (cos, sin) be two vectors on the x-y plane. Let C = (cos, sin be another non-zero ve...
2. LetA = 〈cos-, sin? and B = 〈cosi' sin, be two vectors on the x-y plane. Let -(cos-, sin π〉 3 4 be another non-zero vector on the x-y plane not collinear with A or B. Show that A × B =-B × C. If we could cancel B, as we could if these were real numbers, is it true that A =-C? [Show your work and conclusions on a separate sheet of paper] 2. LetA = 〈cos-, sin?...
B 55 33 X Two vectors A and B are shown in the x-y plane. Vector A has a magnitude of 5 m and makes an angle of 55° with the positive x-axis vector B has a magnitude of 2 m and makes an angle of 33° with the negative x-axis. (See the figure above.) Vector C (not shown in the diagram) is the difference of A and B (C A - B) If you enter an expression, use degrees...
12. Let (o) and (1) represent the unit vectors along the x and y directions, respectively. The effects a rotation in the x-y plane. Show that the length of an operator(cosθ -sinθ) sin θ cos θ arbitrary vector (b) - a)+ b(), which is defined as Va2 + b", is unchanged by this rotation.
4. (a Let (sin( x cos( ) dr + (x cos(x + y) - 2) dy. dz= Show that dz is an exact differential and determine the corresponding function f(x,y) Hence solve the differential equation = z sin( Cos( y) 2 x cos( y) dy 10] (b) Find the solution of the differential equation d2y dy 2 y e dx dæ2 initial conditions th that satisfi 1 (0) [15] and y(0) 0 4. (a Let (sin( x cos( ) dr...
Let F(x, y, z) = sin yi + (x cos y + cos z)j – ysin zk be a vector field in R3. (a) Verify that F is a conservative vector field. (b) Find a potential function f such that F = Vf. (C) Use the fundamental theorem of line integrals to evaluate ScF. dr along the curve C: r(t) = sin ti + tj + 2tk, 0 < t < A/2.
12х + 18у — 4z. (1 point) Let x, y, z be (non-zero) vectors and suppose w = If z 2x 3y, then W = X+ у. Using the calculation above, mark the statements below that must be true. |A. Span(w, x) Span(w, z) B. Span(w, y) Span(w, y, z) |C. Spanx, y, z) = Span(x, y) D. Span(w, z) Span(x, y) E. Span(w, x, z) = Span(w, x, y)
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,...
9. Let V(x,y,+) - +w7+ sin(x + y)e'] + cos(x + 2) be a vector field in R'. Compute the curl and divergence of the vector field.
(b) Let C be the closed curve formed by intersecting the cylinder x2 +y= 1 with the plane x z= 2. Let the tangent to the curve from above. point in the anti-clockwise direction when viewed Calculate the line integral (e (e sin y+ 4) dy+(e(cos z+ sin z)+ay) dz. cos x2yz) dx + (b) Let C be the closed curve formed by intersecting the cylinder x2 +y= 1 with the plane x z= 2. Let the tangent to the...
8х — 2у + 3z. (3 points) Let x, y, z be (non-zero) vectors and suppose w = If z y-4x, then w = x+ -4 1 у. Using the calculation above, mark the statements below that must be true. A. Span(w, z) = Span(y, z) B.Span(x, z) Span(w, z) C. Span(x, y, z) = Span(w, x) |D. Span(w, y) = Span(w, y, z E. Span(x, z) Span(x, y)