(1 point) Suppose a change of coordinates T:R2→R2T:R2→R2 from the uvuv-plane to the xyxy-plane is given by
x=4v−3u−1, y=1+4u+2v.x=4v−3u−1, y=1+4u+2v.
(a) Find the absolute value of the determinant of the Jacobian for
this change of coordinates.
∣∣∣∂(x,y)∂(u,v)∣∣∣=∣∣∣det|∂(x,y)∂(u,v)|=|det |
|
∣∣∣=|= |
(b) If a region D∗D∗ in the uvuv-plane has area 7.047.04, find the
area of the region T(D∗)T(D∗) in the xyxy-plane.
Area =
(1 point) Suppose a change of coordinates T:R2→R2T:R2→R2 from the uvuv-plane to the xyxy-plane is given...
HW09 12.7-12.8: Problem 18 Previous Problem Problem List Next Problem (1 point) Suppose a change of coordinates T : R2 + R2 from the uv-plane to the by-plane is given by I= -30 – 3u - 1. y = -1 +54 + 2v. (a) Find the absolute value of the determinant of the Jacobian for this change of coordinates a(z,y) a(u, v) det - 1 (b) If a region D* in the uv-plane has area 7.14, find the area of...
2. (1 Point) Let r-2u and y-3u. (a) Let R be the rectangle in the uv-plane defined by the points (0,0), (2,0), (2,1), (0 , 1). Find the area of the image of R in the ry plane? (b) Find the area of R by computing the Jacobian of the transformation from uv-space to xy-space Change of Variables When working integrals, it is wise to choose a coordinate system that fits the problem; e.g. polar coordinates are a good choice...
3. (2 Points) Let Q be the quadrilateral in the ry-plane with vertices (1, 0), (4,0), (0, 1), (0,4). Consider 1 dA I+y Deda (a) Evaluate the integral using the normal ry-coordinates. (b) Consider the change of coordinates r = u-uv and y= uv. What is the image of Q under this change of coordinates?bi (c) Calculate the integral using the change of coordinates from the previous part. Change of Variables When working integrals, it is wise to choose a...
Change of Variables When working integrals, it is wise to choose a coordinate system that fits the problem; e.g. polar coordinates are a good choice for integrating over disks. Once we choose a coordinate system we must figure out the area form (dA) for that system. For example, when switching from rectangular to polar coordinates we must change the form of the area element from drdy to rdrd0. To determine that rdrde is the correct formula how the edges of...
1. Are £i and C2 skew lines? Explain your answer and find the distance between them if they are skew lines. 3 marks 2. Let S be the region given by S-((z, y) E R: z2 + y2 4,z? + y2-4y2 0,#2 0, y 20} 1 mark (a) Sketch the region S; (b) Consider the change of variables given by u2 , a2 +y-4y. Describe the region S as set in terms of the variables u and v. Call this...
Compute the Jacobian for the transformation and. Bonus: Find the coordinates for the point in the xy-Plane. 11. (7 pts.) Compute the Jacobian for the transformation x = ue' and y=ue". Bonus: Find the (u, v) coordinates for the point in the xy-Plane (3e, \e).
11. Consider the parabolic coordinate system (u, v) related to the Cartesian coordi- nates (r, y) by х — 2иv, y — u? — u? for (и, v) € [0, оо) х [0, оо) 1 u = 1, u 2' (a) Sketch in the ry-plane the curves given u = 2. Then sketch in 1 v = 1, v = 2. Shade in the region R the xy-plane the curves given v = 2' bounded by the curves given by...
CHANGING COORDINATES/BASIS Question 1. Let R be the triangle in R2 with vertices at (0,0), (-1,1), and (1,1). Consider the following integral: 4(x y)e- dA. R Choose a substitution to new coordinates u and v that will simplify this integrand. Draw a sketch of both the region R and the image of the region in the u,v-plane. Evaluate the integral in the new coordinate system. Warning: No matter what strategy you use for this integral, it will require at least...
3. Consider the following stiff system of autonomous ordinary differential equations du f(u, u) =-3u +3, u(0)2 = ' dt de g(u, v) -2000u - 1000, v(0)-3 Note that 1 u<2 and -4 <v < 3 for all t. (a) Find the Jacobian matrix for the system of equa tions (b) Find the eigenvalues of the Jacobian matrix. (c) In the figure the shaded region shows the region of absolute stability, in the complex h plane, for third order explicit...
1/3 x + y 7. Consider dA where R is the region bounded by the triangle with vertices (0,0), (2,0), V= x+y X-y and (0,-2). The change of variables u=- defines a transformation T(x,y)=(u,v) from the xy-plane 2 to the uv-plane. (a) (10 pts) Write S (in terms of u and v) using set- builder notation, where T:R→S. Use T to help you sketch S in the uv-plane by evaluating T at the vertices. - 1 a(u,v) (b) (4 pts)...