Tris Fray Potter

Are there technical names for a 'smiling' and 'frowning' parabola?

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Didge Doo Profile
Didge Doo answered

Are you looking for concave and convex?

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Tris Fray Potter
Tris Fray Potter commented
Yes, I am! Thank-you, I've been trying to think of those words since 8pm last night.
Didge Doo
Didge Doo commented
Tris, this is a problem I face every day. I'll want to use a word I've known all my life and go completely blank. Seniors moment! Drives me nuts at times.

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