The critical points of a cubic equation are those values of x where the slope of the cubic function is zero. They are found by setting derivative of the cubic equation equal to zero obtaining: f â²(x) = 3 ax 2 + 2 bx + c = 0.n other words, a cubic function is defined by a polynomial of degree three. Setting Æ (x) = 0 produces a cubic equation of the form: Usually, the coefficients a, b, c, d are real numbers. However much of the theory of cubic equations for real coefficients applies to other types of coefficients (such as complex ones).
The name Karina is of Russian and Polish origin. The meaning of Karina is pure, chaste. Karina is generally used as a girl's name. It consists of 6 letters and 3 syllables and is pronounced Ka-ri-na.
Nada is a female name used in Serbia,Croatia,Bosnia...it means hope. Nada is a beautiful girl,usually with dark hair and skin white as Snow White.She can be very mysterious and shy. She is extremely intelligent and sarcastic person.Nada is a very good friend and a very good person,but when you annoy her,you wish you didn't exist.She has a tendency to be late.