Ad: How Focused Are You? (Parabola Graph) Travel Mug
Geometric attitude is alive and well on this mug featuring a parabola along with the following ponderous query: "How Focused Are You?" Parabolic curve showing chord (L) focus (F) and vertex (V). L is an arbitrary chord of the parabola perpendicular to its axis of symmetry which passes through V and F. Showcase your wry mathematical side with a dose of educational geek humor today! myPsychology
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