About quadratic inequality?

Quadratic inequality is a kind of algebraic expression inequality, which refers to the inequality with the highest unknown degree of quadratic. Common quadratic inequalities are: unary quadratic inequality, binary quadratic inequality and so on. Among them, binary quadratic inequality can refer to the expressions and images of circles, ellipses, hyperbolas and parabolas.

summary

The inequality with the highest degree of uncertainty is quadratic.

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definition

Quadratic inequality

Quadratic inequality

Quadratic inequality

When both ends of the inequality are algebraic expressions of n unknowns (n is a natural number), it is called n-ary linear inequality and n-ary quadratic inequality according to the number of algebraic expressions. For example, inequality is one-dimensional linear inequality and one-dimensional quadratic inequality; This inequality is a binary quadratic inequality. Quadratic inequality is an algebraic expression inequality. If the degree of algebraic expression inequality is 2, it is called quadratic inequality; If there are n unknowns, it is called n-ary quadratic inequality.