## lim as x goes to a of: f(x)/g(x) = f'(x)/g'(x)

### The given expression relates to the limit of the ratio of two functions as x approaches a

The given expression relates to the limit of the ratio of two functions as x approaches a. To understand this expression, we need to know its mathematical notation and the concepts involved.

Notation:

– The symbol “lim” represents the limit.

– “x” is the variable that approaches a specific value, represented as “a”.

– f(x) and g(x) represent two functions of x.

– The derivative of a function f(x) is represented by f'(x) or dy/dx, while the derivative of g(x) is denoted as g'(x).

Definition:

The expression “lim as x goes to a of: f(x)/g(x) = f'(x)/g'(x)” is a statement of a special mathematical property known as L’Hopital’s rule. This rule is used to evaluate limits of indeterminate forms (0/0 or ∞/∞) involving functions in calculus.

L’Hopital’s rule states that if the limit of the ratio of two functions, f(x)/g(x), as x approaches a, exists and if both f'(x) and g'(x) exist and are finite, then the limit of the ratio of the derivatives of the functions, f'(x)/g'(x), as x approaches a is equal to the original limit.

In other words, if the original limit is of the form 0/0 or ∞/∞ and satisfies the conditions given above, then L’Hopital’s rule allows us to replace the original limit with the limit of the ratio of the derivatives, which is often easier to evaluate.

It is important to note that L’Hopital’s rule can only be applied under certain conditions, including the existence and finiteness of the derivatives of the functions involved. Additionally, it is not guaranteed to work for all limits, so careful analysis is required to determine if L’Hopital’s rule is applicable in a specific case.

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