[SOLVED] easy second derivative question 1. The problem statement, all variables and given/known data "If y^2 - 3x =7 what is the second derivative?" 2. Relevant equations Answer choices: A) -6/7y^3 B) -3/y^3 C) 3 D) 3/2y E) -9/4y^3 3. The attempt at a solution I got the first derivative to be: 3/2y Second derivative: -6/(4y^2) I cannot for the life of me figure out what I did wrong, but I know it's something since that's not a choice. I've been messing up a lot lately, so I think I'm making some sort of vital error. A step by step explanation would be appreciated! You guys are so awesome here, thank you for all that you do.