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Determine the truth value of each expression below. The domain is the set of all real numbers. (e) xy (xy = yx) (f) xyz (x2
Determine the truth value of each expression below. The domain is the set of all real numbers.
(e) xy (xy = yx)
(f) xyz (x2 + y2 = z2)
(g) xy y2 = x
(h) xy (x < 0 y2 = x)
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