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Evaluate the limit:

(iii) [tex]\lim_{x \rightarrow 3} \frac{\sqrt{2x+3}}{x+3}[/tex]


Sagot :

To find the limit of the function [tex]\(\frac{\sqrt{2x + 3}}{x + 3}\)[/tex] as [tex]\(x\)[/tex] approaches 3, we follow these steps:

1. Substitution: First, we substitute [tex]\(x = 3\)[/tex] directly into the function to see if it gives us a clear value or an indeterminate form.
[tex]\[ \frac{\sqrt{2(3) + 3}}{3 + 3} = \frac{\sqrt{6 + 3}}{6} = \frac{\sqrt{9}}{6} = \frac{3}{6} = \frac{1}{2} \][/tex]

2. Conclusion: As we can see, substituting [tex]\(x = 3\)[/tex] into the function does not result in an indeterminate form (e.g., [tex]\(\frac{0}{0}\)[/tex] or [tex]\(\frac{\infty}{\infty}\)[/tex]). Instead, it gives us a finite value of [tex]\(\frac{1}{2}\)[/tex].

Thus, the limit is:

[tex]\[ \lim_{x \rightarrow 3} \frac{\sqrt{2x + 3}}{x + 3} = \frac{1}{2} \][/tex]

Therefore, the limit of the function as [tex]\(x\)[/tex] approaches 3 is [tex]\(\boxed{\frac{1}{2}}\)[/tex].