1. The problem statement, all variables and given/known data lim [√(2x2 +1)]/(3x - 5) x→-∞ I know that the answer is -√2/3. That is the answer my professor had on this example, and the math lab tutor also agreed, and so did my graphing calculator. But I keep getting √2/3 on paper. The math lab tutor explained yesterday why it is negative to me, but I didn't write it down, as I wanted to ask a few more questions, so I forgot why, which has left me irritated that I forgot. 2. Relevant equations 3. The attempt at a solution lim [√(2x2 +1)]/(3x - 5) x→-∞ lim √(2x2/x2 +1/x2) x→-∞ / (3x/x - 5/x) lim √2 + 0 x→-∞ / 3 - 0 √2/3 The professor said something about the numerator being +∞ and the denominator being -∞, so the answer must be negative, but I thought the limit of the denominator was 3, which is positive? Thanks for any help!