Find $$\lim _ { x \rightarrow 3 } [ g ( x ) - f ( x ) ]$$

question 90

Multiple Choice

Find
$$\lim _ { x \rightarrow 3 } [ g ( x ) - f ( x ) ]$$
for $f ( x ) = 4 x ^ { 3 }$ and $g ( x ) = \frac { \sqrt { x ^ { 2 } + 9 } } { 5 x ^ { 2 } }$ .

• A) \(\frac { \sqrt { 2 } } { 15 } - 108\)
• B) \(\frac { \sqrt { 10 } } { 5 } - 108\)
• C) \(\frac { 36 \sqrt { 2 } } { 5 }\)
• D) \(\frac { \sqrt { 10 } } { 5 } + 108\)
• E) limit does not exist

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