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July 25, 2014

July 25, 2014

Posted by **dreww1961** on Thursday, October 14, 2010 at 12:40am.

a.Prove that f^-1(T1 U T2)= f^-1(T1) U f^-1(T2).

b.Prove that f^-1(T1 intersects T2) = f^-1(T1) intersects f^-1(T2). I think once I see a I can do b.

c. Prove that f^-1(T1) - f^-1(T2) = f^-1(T1-T2).

d. Prove that if T1 is a proper subset of T2, then f^-1(T1) is a proper subset of f^-1(T2).

I am confused on this one and need some help understanding inverse mapping. Thank you

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