Mathematics for Business and Economics GEN1201/ECN1201 L, Kalybay Aigerim

Quadratic equation is a polynomial equation with a degree of 2. 

Quartic equation is a polynomial having a degree of 4. 

Rational numbers are numbers that can be expressed as a fraction (or ratio) a⁄b of two integers (the integers are therefore a subset of the rationals), or alternatively a decimal which terminates after a finite number of digits or begins to repeat a sequence. 

Real numbers are all numbers (including natural numbers, integers, decimals, rational numbers and irrational numbers) which do not involve imaginary numbers (multiples of the imaginary unit i, or the square root of -1), may be thought of as all points on an infinitely long number line.

Sequence is an ordered set whose elements are usually determined based on some function of the counting numbers, e.g. a geometric sequence is a set where each element is a multiple of the previous element; an arithmetic sequence is a set where each element is the previous element plus or minus a number.

Set is a collection of distinct objects or numbers, without regard to their order, considered as an object in its own right. 

Slope is the steepness or incline of a line, determined by reference to two points on the line, e.g. The slope of the line y = mx + b is m, and represents the rate at which y is changing per unit of change in x.

Subset is a subsidiary collection of objects that all belong to, or is contained in, an original given set, e.g. subsets of {a, b} could include - {a}, {b}, {a, b} and {}. 

Symmetry is the correspondence in size, form or arrangement of parts on a plane or line (line symmetry is where each point on one side of a line has a corresponding point on the opposite side, e.g. a picture a butterfly with wings that are identical on either side; plane symmetry refers to similar figures being repeated at different but regular locations on the plane).