mathinschool.com
numbers and algebraic expressions
logic, sets, intervals
absolute value
function and its properties
linear function
quadratic function
polynomials
rational function
exponential function
logarithm
number sequences
limits of sequences and functions
derivative and integral of functions
trigonometry
plane geometry
analytic geometry
solid geometry
combinatorics
probability
elements of statistics
kropki game

Sets of numbers. Natural numbers: N. 0, 1, 2, 3, 4, ... Integer numbers: C 0, -1, 1, -2, 2, -3, 3,... Rational numbers: W. A rational number is any number that can be expressed as the fraction p/q, where p i q are integers and q not = 0. Examples: 0, 5, -4, 1/2, -2/3, 4 1/5. Irrational numbers: R\W. Examples: square root of 2, square root of 5, pi, 1 - square root of 7. Real numbers: R. Real numbers there are Rational and Irrational numbers.