Limits involving natural exponential

In summary, a natural exponential function is a mathematical function of the form f(x) = e^x, commonly used in mathematics and science. It has properties such as a positive y-intercept, a continuous and differentiable curve, and an inverse function of ln(x). Limits involving natural exponential functions are evaluated using calculus rules, and have real-world applications in various fields. Special techniques, such as rewriting in terms of ln(x) and using L'Hopital's rule, can be used to evaluate these limits.
  • #1
synergix
178
0

Homework Statement



lim e3/(2-x)
x->2+

The Attempt at a Solution



I can't seem to get started on this one.
 
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  • #2
What's the behavior of 3/(2-x) like as x->2+?
 
  • #3
e will be raised to a larger and larger negative number as x approaches 2+ and so the limit will approach 0.
 
  • #4
synergix said:
e will be raised to a larger and larger negative number as x approaches 2+ and so the limit will approach 0.

Sure, absolutely.
 

FAQ: Limits involving natural exponential

What is a natural exponential function?

A natural exponential function is a mathematical function of the form f(x) = e^x, where e is a mathematical constant approximately equal to 2.71828. It is a special type of exponential function that is commonly used in mathematics and science.

What are the properties of natural exponential functions?

Natural exponential functions have several important properties, including a positive y-intercept, a continuous and differentiable curve, and an inverse function of ln(x). They also have the unique property that their derivative is equal to the function itself.

How are limits involving natural exponential functions evaluated?

Limits involving natural exponential functions are evaluated using the rules of calculus, specifically the limit definition of the derivative. This involves taking the limit of the function as x approaches a certain value, and then using algebraic manipulation and substitution to simplify the expression and find the limit.

What are some real-world applications of limits involving natural exponential functions?

Limits involving natural exponential functions are used in many fields, including physics, chemistry, and finance. For example, they can be used to model population growth, radioactive decay, and compound interest.

Are there any special techniques for evaluating limits involving natural exponential functions?

Yes, there are several special techniques that can be used to evaluate limits involving natural exponential functions. One common technique is to rewrite the function in terms of its inverse, ln(x), and then use properties of ln(x) to simplify the expression. Another technique is to use L'Hopital's rule, which involves taking the derivative of both the numerator and denominator of the function and then taking the limit again.

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