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Thursday, April 4, 2013

Indeterminate Form - Combined

Category: Differential Calculus, Algebra

"Published in Suisun City, California, USA"

Evaluate 



Solution:

Consider the given equation  above



Substitute the value of x to the above equation, we have



Since the Indeterminate Form is ∞/∞, then we can use the L'Hopital's Rule but the problem is there's an exponent that associated with the Indeterminate Form. We have to eliminate the exponent first before we can apply the L'Hopital's Rule to the given equation. We cannot accept as a final answer for the given equation.

Let

Take natural logarithm on both sides of the equation




Substitute the value of x to the above equation, we have





Since the Indeterminate Form is ∞/∞, then we can use the L'Hopital's Rule but the problem is the Indeterminate Form is a function of natural logarithm. We have to rewrite the above equation as follows



Divide both the numerator and denominator by 1/x, we have



Substitute the value of x to the above equation, we have









Since the Indeterminate Form is ∞∙0, then we have to rewrite the above equation as follows





Substitute the value of x to the above equation, we have







Since the Indeterminate Form is 0/0, then we can use the L'Hopital's Rule as follows















Substitute the value of x to the above equation, we have









Take the inverse natural logarithm on both sides of the equation







Therefore,