if s@t = 1/s + 1/t, is s@t = 1?
1. s + t is not equal to 4
2. s/t is not equal to 1
the answer is E but was wondering why it isn't D?
1. s + t is not equal to 4
2. s/t is not equal to 1
the answer is E but was wondering why it isn't D?
