don't have a good teacher. need to understand how if can solve to figure out if this is undefined

t-3/3-5

3 answers

it is undefined it you try to divide by zero. Dividing by zero is UNDEFINED.

I don't see a zero division there, but am not certain what it is without parenthesis.
is this what you are saying......... (t-5)/(3-t)..i need to list the numbers for which the rational expression is undefined.
with that, then t=3 is undefined; the denominator is zero.