Contrapposto is a sculptural technique in which one hip is lower than the other because a knee has been bent or a leg has been moved forward or backward. It shows the artist's better understanding of anatomy. It is first exhibited in the ancient GreekKritikos Boy[?], and can also be seen in Michelangelo's David.
... terms of the coefficients a, b and c, which are assumed to be real (but see below for generalizations) with a being non-zero. These solutions are also ...