karelysicairos5762 karelysicairos5762 17-01-2024 Mathematics contestada Let d = (s, t) | s² t² ≤ 1, s ≥ 0, t ≥0 and let x: d → r3 be defined as x(s, t) = (s t, s - t, st). What is the definition of x(s, t)?