Consider u = {x|x is a negative real number}
which is an empty set?
{x\x e u and x has...
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Mathematics, 29.10.2019 00:31 linhlema2005
Consider u = {x|x is a negative real number}
which is an empty set?
{x\x e u and x has a negative cube root}
{x|x eu and x has a negative square root}
{x|x e u and x is equal to the product of a positive number and -1}
{xx eu and x is equal to the sum of one negative and one positive number}
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