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Evaluate the following limit:

[tex]\[
\lim _{x \rightarrow 2}\left(\frac{5}{3 x^4-2 x^2-37}\right)^2
\][/tex]


Sagot :

To evaluate the limit of the given function as [tex]\( x \)[/tex] approaches 2, let's go through the following steps:

[tex]\[ \lim_{{x \to 2}} \left( \frac{5}{3x^4 - 2x^2 - 37} \right)^2 \][/tex]

First, let’s understand the expression inside the limit:

1. The function inside the limit is:
[tex]\[ \left( \frac{5}{3x^4 - 2x^2 - 37} \right)^2 \][/tex]

2. Substitute [tex]\( x = 2 \)[/tex] into the expression [tex]\( 3x^4 - 2x^2 - 37 \)[/tex]:

[tex]\[ 3(2)^4 - 2(2)^2 - 37 = 3(16) - 2(4) - 37 \][/tex]
[tex]\[ = 48 - 8 - 37 \][/tex]
[tex]\[ = 48 - 45 \][/tex]
[tex]\[ = 3 \][/tex]

Thus, the expression [tex]\( 3x^4 - 2x^2 - 37 \)[/tex] evaluates to 3 when [tex]\( x = 2 \)[/tex].

3. Now substituting [tex]\( x = 2 \)[/tex] back into the original function:

[tex]\[ \left( \frac{5}{3(2)^4 - 2(2)^2 - 37} \right)^2 = \left( \frac{5}{3} \right)^2 \][/tex]
[tex]\[ = \left( \frac{5}{3} \right)^2 \][/tex]
[tex]\[ = \frac{25}{9} \][/tex]

Therefore, the evaluated limit is:

[tex]\[ \lim_{{x \to 2}} \left( \frac{5}{3x^4 - 2x^2 - 37} \right)^2 = \frac{25}{9} \][/tex]