system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Which of the following are convex functions: x^2, x square, 0, sin(x), e^x, sqrt(x), x^-0.5


assistant
x^2, x square, 0, e^x