Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: [Does space the space parabola space of space the space following space function space open space up space or space open space down ? f left parenthesis text x end text right parenthesis equals # a text x end text squared plus # b text x- end text # c]: The parabola opens up (a smile).; The parabola opens down (a frown).
Right answer summary: The parabola opens down (a frown).
Question state: todo