Describe the sets of points in space whose coordinates satisfy the given inequalities or combinations of equations

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Describe the sets of points in space whose coordinates satisfy the given inequalities or combinations of equations and inequalities.

a. 1 ≤ x2 + y2 + z2 ≤ 4

b. x2 + y2 + z2 ≤ 1, z ≥ 0

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Thomas Calculus Early Transcendentals

ISBN: 9780321884077

13th Edition

Authors: Joel R Hass, Christopher E Heil, Maurice D Weir

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