relation between semi major axis and semi minor axis of ellipse
Semi-major and semi-minor axes The semi-minor axis of an ellipse or hyperbola is a line segment that is at right angles with the semi-major axis and has one end at the center of the conic section.
F minor F minor is a minor scale based on F, consisting of the pitches F, G, A♭, B♭, C, D♭, and E♭. The harmonic minor raises the E♭ to E♮. Its key signature has four flats.