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...Multiple choice x y pts compute the jacobian u v of coordinate transformation uv a b xu yv c d e solution find zz sin da where is disk centered at origin radius cos arcsin arccos convert to iterated polar integral z asin r rdrd let be thin wire lying as straight line in rst quadrant suppose charge density on given by q then total rc ds which number below parametrize we can use t h ti zc furthermore i dt so function quarter formula gives moment about axis this drd rsin dr answer if you care plate xy plane precise shape irrelevant mass and that center what m f hy xi calculate curve ht idt tetrahedron bounded planes write fold with respect dydx computes volume region integration for double triangle determined lines obtained intersecting these are point intersection two solid under above zzx evaluate rr px ellipse...