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Question: please help with multi variable calculus i have no idea...

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Please help with multi variable calculus, I have no idea how to do any of these problems. Thank you very much.
Math 32Multivariable Calculus HW 1 Due Friday, February I (1) Describe the set of all points (z, y. 2) in R3 that satisfy the following equations. (a) z=0 (b) y2-425 (d) ry 0 (f) z2- 2 (2) Consider the two points A (1, ,1) and B (22,2) (a) Verify that Af-nga, a产, a ) is equidistant from A and B (b) Show that M is in fact the midpoint of the segment AB (hint: use the triangle inequality). (3) Consider the three points A (2,2,3), B (1.0,1), and C (x, y,z). Write down equations involving z, y, and z that ensure that the triangle ABC is isosceles with base AB. Describe the set of all such points C geometrically (4) Find an algebraic expression for the set of all points (z, y.2) whose distance from (1,2,3) is twice their distance from (1,0,-1). Describe that set geometrically (5) Match each function with its graph, justifying your choices (V) 2 + (II) sin() +sin(y)
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