About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 93. Chapters: Natural number, Complex number, Integer, Cartesian coordinate system, Square root, Order of magnitude, Sequence, Distance, Identity function, Slope, Unary numeral system, Periodic function, Ratio, Distinct, Abscissa, Unit vector, Number system, Mathematical anxiety, Mathematical beauty, Hindu-Arabic numeral system, History of the Hindu-Arabic numeral system, Latin letters used in mathematics, Variable, Rational number, Counting, Unimodality, Squared triangular number, Diagonal, Operation, Missing square puzzle, Elementary proof, Radix, Clock angle problem, Cognitively Guided Instruction, Cyrillic numerals, Circular shift, Constant function, Degeneracy, Subsequence, Positive and negative parts, Root of a function, Mathematical problem, Number line, Vinculum, Abstraction, Arg max, Tally marks, Y-intercept, Origin, Term, Point plotting, Pre-algebra, Value, Pythagoras' constant, Like terms, Inverse relationship, Direct relationship, Logarithmically concave sequence. Excerpt: A function, in mathematics, associates one quantity, the argument of the function, also known as the input, with another quantity, the value of the function, also known as the output. A function assigns exactly one output to each input. The argument and the value may be real numbers, but they can also be elements from any given set. An example of a function is f(x) = 2x, a function which associates with every number the number twice as large. Thus 5 is associated with 10, and this is written f(5) = 10. The input to a function need not be a number, it can be any well defined object. For example, a function might associate the letter A with the number 1, the letter B with the number 2, and so on. There are many ways to describe or represent a function, such as a formula or algorithm that computes the output for a given input, a graph that gives a pict...
