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Indeterminate form is a mathematical expression that can obtain any value depending on circumstances. In calculus , it is usually possible to compute the limit of the sum, difference, product, quotient or power of two functions by taking the corresponding combination of the separate limits of each respective function.
Limits involving algebraic operations can often be evaluated by replacing subexpressions with their limits; if the resulting expression does not determine the original limit, the expression is known as an indeterminate form. [6] The expression 0 0 is an indeterminate form: Given real-valued functions f(t) and g(t) approaching 0 (as t approaches ...
See Indeterminate form. --Kinu t / c 19:34, 15 May 2016 (UTC) Indeterminate forms are quite common with +-infinity. With only real numbers (i.e. no infinities) there are only 4 indeterminate forms; 0/0, 0 to the 0, the zeroth root of 1, and the logarithm of 1 in base 1. Georgia guy 20:41, 15 May 2016 (UTC)
Here is a basic example involving the exponential function, which involves the indeterminate form 0 / 0 at x = 0: + = (+) = + = This is a more elaborate example involving 0 / 0 . Applying L'Hôpital's rule a single time still results in an indeterminate form.
This rule uses derivatives to find limits of indeterminate forms 0/0 or ±∞/∞, and only applies to such cases. Other indeterminate forms may be manipulated into this form. Given two functions f(x) and g(x), defined over an open interval I containing the desired limit point c, then if:
L'Hôpital's rule - a method in calculus for evaluating indeterminate forms; Indeterminate form - a mathematical expression for which many assignments exist; NaN - the IEEE-754 expression indicating that the result of a calculation is not a number; Primitive notion - a concept that is not defined in terms of previously-defined concepts
The expressions , (), and / (called indeterminate forms) are usually left undefined. These rules are modeled on the laws for infinite limits . However, in the context of probability or measure theory, 0 × ± ∞ {\displaystyle 0\times \pm \infty } is often defined as 0.
In these limits, the infinitesimal change is often denoted or .If () is differentiable at , (+) = ′ ().This is the definition of the derivative.All differentiation rules can also be reframed as rules involving limits.