30. Lim_(x Rarr 2)((3^(x)+3^(3-x)-12)/(3^(3-x)-3^(x/2)))

2 min read Jul 25, 2024
30. Lim_(x Rarr 2)((3^(x)+3^(3-x)-12)/(3^(3-x)-3^(x/2)))

Evaluating the Limit: lim(x→2)((3^(x)+3^(3-x)-12)/(3^(3-x)-3^(x/2)))

In this article, we will evaluate the limit of a complex function as x approaches 2. The function is given by:

(3^(x)+3^(3-x)-12)/(3^(3-x)-3^(x/2))

To evaluate this limit, we will use various techniques and properties of limits.

Step 1: Simplify the Function

Before evaluating the limit, let's simplify the function by combining the terms with the same base (3):

(3^(x) + 3^(3-x) - 12) / (3^(3-x) - 3^(x/2))

= (3^(x) + 3^(3-x) - 3^2) / (3^(3-x) - 3^(x/2))

= (3^(x) + 3^(3-x) - 9) / (3^(3-x) - 3^(x/2))

Step 2: Evaluate the Limit

Now, let's evaluate the limit as x approaches 2:

lim(x→2) ((3^(x) + 3^(3-x) - 9) / (3^(3-x) - 3^(x/2)))

= ((3^2 + 3^(2-2) - 9) / (3^2 - 3^(2/2)))

= ((9 + 3^0 - 9) / (9 - 3^1))

= (3^0 / (9 - 3))

= 1 / 6

Therefore, the value of the limit is 1/6.

Conclusion

In this article, we evaluated the limit of a complex function as x approaches 2 using various techniques and properties of limits. The final answer is 1/6. This example demonstrates the importance of simplifying the function before evaluating the limit.

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