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
A Reflection with restpect to the origin of xy-plane. The graph of a function -f(-x) obtain reflect f(x) with respect to the origin of xy-plane. The graphs f(x) and -f(-x) are symmetrical with respect to the origin of xy-plane. The graph of absolute value of a function. The graph of a function |f(x)| obtain reflect a part of the graph f(x) below x-axis.