If is surjective and A is finite, then B is finite. True or false?
I think this is false but my book says it is true.
I think its false by counter-example:
Let A= and let f(x) = tan(x). Then B is infinite?
Am I wrong about this?
If is surjective and A is finite, then B is finite. True or false?
I think this is false but my book says it is true.
I think its false by counter-example:
Let A= and let f(x) = tan(x). Then B is infinite?
Am I wrong about this?