
Finding Work in a Conservative Force Field In Exercises 19-22, (a) show that

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Chapter 15 Solutions
Calculus (MindTap Course List)
- (2) (12 points) Let f(x,y) = x²e¯. (a) (4 points) Calculate Vf. (b) (4 points) Given x directional derivative 0, find the line of vectors u = D₁f(x, y) = 0. (u1, 2) such that the - (c) (4 points) Let u= (1+3√3). Show that Duƒ(1, 0) = ¦|▼ƒ(1,0)| . What is the angle between Vf(1,0) and the vector u? Explain.arrow_forwardFind the missing values by solving the parallelogram shown in the figure. (The lengths of the diagonals are given by c and d. Round your answers to two decimal places.) a b 29 39 66.50 C 17.40 d 0 54.0 126° a Ꮎ b darrow_forward(5) (10 points) Let D be the parallelogram in the xy-plane with vertices (0, 0), (1, 1), (1, 1), (0, -2). Let f(x,y) = xy/2. Use the linear change of variables T(u, v)=(u,u2v) = (x, y) 1 to calculate the integral f(x,y) dA= 0 ↓ The domain of T is a rectangle R. What is R? |ǝ(x, y) du dv. |ð(u, v)|arrow_forward
- 2 Anot ined sove in peaper PV+96252 Q3// Find the volume of the region between the cylinder z = y2 and the xy- plane that is bounded by the planes x=1, x=2,y=-2,andy=2. vertical rect a Q4// Draw and Evaluate Soxy-2sin (ny2)dydx D Lake tarrow_forwardDetermine whether the Law of Sines or the Law of Cosines can be used to find another measure of the triangle. B 13 cm 97° Law of Sines Law of Cosines A 43° Then solve the triangle. (Round your answers to two decimal places.) b = x C = A = 40.00arrow_forwardFind the missing values by solving the parallelogram shown in the figure. (The lengths of the diagonals are given by c and d. Round your answers to two decimal places.) a 29 b 39 d Ꮎ 126° a Ꮎ b darrow_forward
- A retractable awning above a patio lowers at an angle of 50° from the exterior wall at a height of y = 11 feet above the ground. No direct sunlight is to enter the door when the angle of elevation of the sun is greater than 70° (see figure). What is the length x of the awning? (Round your answer to two decimal places.) x = ft 7507 Suns rays 70°arrow_forwardhelp and show work plsarrow_forwardTwo ships leave a port at 9 a.m. One travels at a bearing of N 53° W at 10 miles per hour, and the other travels at a bearing of S 67° W at 14 miles per hour. Approximate how far apart they are at noon that day. (Round your answer to one decimal place.) miarrow_forward
- In the triangle below, x = 7. Use the Law of Cosines to solve the triangle. A = B = C = 12 cm 18 cm B x cm ° о °arrow_forwardA triangular parcel of ground has sides of length 750 feet, 650 feet, and 535 feet. Find the measure of the largest angle. (Round your answer to one decimal place.)arrow_forwardA boat is sailing due east parallel to the shoreline at a speed of 10 miles per hour. At a given time, the bearing to a lighthouse is S 70° E, and 15 minutes later, the bearing is S 63° E (see figure). The lighthouse is located at the shoreline. Find the distance d from the boat to the shoreline. (Round your answer to one decimal place.) x mi N 63° WE 70° Sarrow_forward
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