Let f: r --> r prove that f is continuous on r iff f-1(h) is a closed set whenever h is a closed set

Answer with Step-by-step explanation:

We are given that a function is a continuous on R

f:RR

We have to prove that if function is continuous ton R iff inverse image of closed set H is closed.

Let H be a closed set and function is continuous  then R-H is a opens set

=Open set

When function is continuous then inverse image of open set is open

Hence, is a closed set

Conversely,

Let inverse image of closed set H is closed

If H is closed set then R-H is open set

When inverse image of closed set is closed then R-inverse image of H is opens set

When inverse image of open set is open then  the function is continuous.

Hence, function is continuous.

Hence proved.

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it

step-by-step explanation:

if you meant, "on the way from (3, 2) to (3, 14):

x does not change; y increases by 12.

ensure that you have copied down this problem correctly.   .