Question

indicate wheter the conjecture is true or false if false provide a counterexample?
if a/b > 0 , then a >0 and b >0
thanks in advance :)

Answer 1

True

Answer 2

thank you

Answer 3

a=-1 and b=-1

Answer 4

hmmm...It's false in that case. My bad, sorry.

Answer 5

thanks guys :)

Answer 6

This conjecture is false. If a mathematical statement is false for one case, it is said to be false. A counterexample would be two negatives as Zarkon wrote.

Answer 7

what would another counter exampe be? van there be more?

Answer 8

can*