Problem 1E: Suppose you start at the origin, move along the x-axis a distance of 4 units in the positive... Problem 2E: Sketch the points (1, 5, 3), (0, 2, 3), (3, 0, 2), and (2, 2, 1) on a single set of coordinate axes. Problem 3E: Which of the points A(4, 0, 1), B(3, 1, 5), and C(2, 4, 6) is closest to the yz-plane? Which point... Problem 4E Problem 5E: What does the equation x = 4 represent in 2? What does it represent in 3? Illustrate with sketches. Problem 6E: What does the equation y = 3 represent in 3? What does z = 5 represent? What does the pair of... Problem 7E: Describe and sketch the surface in 3 represented by the equation x + y = 2. Problem 8E: Describe and sketch the surface in 3 represented by the equation x2 + z2 = 9. Problem 9E: Find the distance between the given points. 9. (3,5,2),(1,1,4) Problem 10E Problem 11E: Find the lengths of the sides of the triangle PQR. Is it a right triangle? Is it an isosceles... Problem 12E: Find the lengths of the sides of the triangle PQR. Is it a right triangle? Is it an isosceles... Problem 13E: Determine whether the points lie on a straight line. (a) A(2, 4, 2), B(3, 7, 2), C(1, 3, 3) (b)... Problem 14E: Find the distance from (4, 2, 6) to each of the following. (a) The xy-plane (b) The yz-plane (c) The... Problem 15E: Find an equation of the sphere with center (3, 2, 5) and radius 4. What is the intersection of this... Problem 16E: Find an equation of the sphere with center (2, 6, 4) and radius 5. Describe its intersection with... Problem 17E: Find an equation of the sphere that passes through the point (4, 3, 1) and has center (3, 8, 1). Problem 18E: Find an equation of the sphere that passes through the origin and whose center is (1, 2, 3). Problem 19E: Show that the equation represents a sphere, and find its center and radius. 19. x2+y2+z2+8x2z=8 Problem 20E: Show that the equation represents a sphere, and find its center and radius. 20. x2+y2+z2=6x4y10z Problem 21E: Show that the equation represents a sphere, and find its center and radius. 21. 2x2+2y2+2z22x+4y+1=0 Problem 22E: Show that the equation represents a sphere, and find its center and radius. 22. 4x2+4y2+4z2=16x6y12 Problem 23E: Midpoint Formula Prove that the midpoint of the line segment from P1x1,y1,z1 to P2x2,y2,z2 is... Problem 24E Problem 25E Problem 26E: Which coordinate plane is closest to the point (7,3,8) ? Find an equation of the sphere with center... Problem 27E: Describe in words the region of 3 represented by the equation(s) or inequalities. 27. z=2 Problem 28E: Describe in words the region of 3 represented by the equation(s) or inequalities. 28. x=3 Problem 29E: Describe in words the region of 3 represented by the equation(s) or inequalities. 29. y1 Problem 30E: Describe in words the region of 3 represented by the equation(s) or inequalities. 30. x4 Problem 31E: Describe in words the region of 3 represented by the equation(s) or inequalities. 31. 1x2 Problem 32E: Describe in words the region of 3 represented by the equation(s) or inequalities. 32. z=y Problem 33E: Describe in words the region of 3 represented by the equation(s) or inequality. 31. x2 + y2 = 4, z =... Problem 34E: Describe in words the region of 3 represented by the equation(s) or inequality. 32. x2 + y2 = 4 Problem 35E: Describe in words the region of 3 represented by the equation(s) or inequalities. 35. y2+z225 Problem 36E: Describe in words the region of 3 represented by the equation(s) or inequalities. 36. x2+z225,0y2 Problem 37E: Describe in words the region of 3 represented by the equation(s) or inequality. 33. x2 + y2 + z2 = 4 Problem 38E: Describe in words the region of 3 represented by the equation(s) or inequality. 34. x2 + y2 + z2 4 Problem 39E: Describe in words the region of 3 represented by the equation(s) or inequality. 35. 1 x2 + y2 + z2 ... Problem 40E: Describe in words the region of 3 represented by the equation(s) or inequalities. 40. 1x2+y25 Problem 41E: Describe in words the region of 3 represented by the equation(s) or inequalities. 41. 0x3,0y3,0z3 Problem 42E: Describe in words the region of 3 represented by the equation(s) or inequality. 38. x2 + y2 + z2 2z Problem 43E: Write inequalities to describe the region. 39. The region between the yz-plane and the vertical... Problem 44E: Write inequalities to describe the region. 40. The solid cylinder that lies on or below the plane z... Problem 45E: Write inequalities to describe the region. 41. The region consisting of all points between (but not... Problem 46E: Write inequalities to describe the region. 42. The solid upper hemisphere of the sphere of radius 2... Problem 47E: The figure shows a line L1 in space and a second line L2, which is the projection of L1 onto the... Problem 48E: Consider the points P such that the distance from P to A( 1, 5, 3) is twice the distance from P to... Problem 49E: Find an equation of the set of all points equidistant from the points A(1, 5, 3) and B(6, 2, 2).... Problem 50E: Find the volume of the solid that lies inside both of the spheres x2 + y2 + z2 + 4x 2y + 4z + 5 = 0... Problem 51E: Find the distance between the spheres x2 + y2 + z2 = 4 and x2 + y2 + z2 = 4x + 4y + 4z 11. Problem 52E: Describe and sketch a solid with the following properties. When illuminated by rays parallel to the... format_list_bulleted