Other
Gaussian Elimination and Back Substitution Interpolation
Lagrange Interpolation
Newton's Divided Difference Interpolation Smooth Curves
Smo+oth curve interpolation algorithm point insert
Online functions graphing
https://www.desmos.com/calculator

Sets of numbers

Natural numbers 1, 2, 3, …

Whole numbers 0, 1, 2, 3, …

Integers …, -3, -2, -1, 0, 1, 2, 3, …

Rational numbers any number that can be expressed in the form , where p and q are integers, rational numbers are terminating or repeating when written in decimal form

Irrational numbers any number that cannot be written as (where p and q are integers), irrational numbers are nonterminating and nonrepeating when written in decimal form

Real numbers any number that is rational or irrational.