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).
Karina [ka-ri-na]â¼ as a girls' name is pronounced ka-REE-nah. It is of Scandinavian and Latin origin, and the meaning of Karina is beloved. Variant of Katherine; diminutive of Karina. Popular in Russia. See also Carina and Karen. Also form of Cara. Also form of Kara.
Reika (ããã, ã¬ã¤ã«, pronounced ray-kah, or rai-kuh) is a Japanese given name for females. The name can be written using the characters for lovely; companion (rei) and splendor; flower; petal (ka). However the name can have many different meanings depending on which kanji is used. Reika can also be written in katakana or hiragana.