.Let f be a function from X to Y.3 If X is regular, which of the following *.conditions on fimplies that Y is regular (1
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.Let f be a function from X to Y.3 If X is regular, which of the following *.conditions on fimplies that Y is regular (1
.Let f be a function from X to Y.3 If X is regular, which of the following *.conditions on fimplies that Y is regular (1 (1 نقطة) open O continuous, open O homeomorphism O continuous, onto o open, onto o