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In elementary algebra, root rationalisation (or rationalization) is a process by which radicals in the denominator of an algebraic fraction are eliminated.. If the denominator is a monomial in some radical, say , with k < n, rationalisation consists of multiplying the numerator and the denominator by , and replacing by x (this is allowed, as, by definition, a n th root of x is a number that ...
The degree of the graph of a rational function is not the degree as defined above: it is the maximum of the degree of the numerator and one plus the degree of the denominator. In some contexts, such as in asymptotic analysis, the degree of a rational function is the difference between the degrees of the numerator and the denominator.
This is a list of limits for common functions such as elementary functions. In this article, the terms a , b and c are constants with respect to x . Limits for general functions
In each case, if the limits of the numerator and denominator are substituted, the resulting expression is /, which is indeterminate. In this sense, 0 / 0 {\displaystyle 0/0} can take on the values 0 {\displaystyle 0} , 1 {\displaystyle 1} , or ∞ {\displaystyle \infty } , by appropriate choices of functions to put in the numerator and denominator.
As (+) = and (+) + =, the sum and the product of conjugate expressions do not involve the square root anymore. This property is used for removing a square root from a denominator, by multiplying the numerator and the denominator of a fraction by the conjugate of the denominator (see Rationalisation).
Sixty-one years ago, on November 22, 1963, President John F. Kennedy was assassinated in Dallas, Texas, in a shocking tragedy that still echoes. The JFK assassination sent the nation into mourning ...
In the mid-1990s, a boy who loved Sonic the Hedgehog came up with a theory so strange only the Internet could love it. What if he was right?
Examples abound, one of the simplest being that for a double sequence a m,n: it is not necessarily the case that the operations of taking the limits as m → ∞ and as n → ∞ can be freely interchanged. [4] For example take a m,n = 2 m − n. in which taking the limit first with respect to n gives 0, and with respect to m gives ∞.