Stegnaster

Stegnaster is a genus of sea stars of the family Asterinidae, endemic to New Zealand. It contains two species:[1]

Species

gollark: Differentiate it, substitute x=3 into that, set dy/dx to 0, solve.

gollark: Oh, actually just > 0 since it's a denominator, yes.

gollark: The $9-x^2$ bit has to have a value >= 0. So solve that and work out for which values it is >= 0.

gollark: You want the bit in the square root to be greater than or equal to 0, so just figure out what values of x give you that.

gollark: I see.

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