If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Second derivatives (implicit equations)

You might need: Calculator


Let x, cubed, plus, y, squared, equals, 24.
What is the value of start fraction, d, squared, y, divided by, d, x, squared, end fraction at the point left parenthesis, 2, comma, 4, right parenthesis?
Give an exact number.
  • Your answer should be
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4