Mathematics

Problem

Which one of the following functions approaches a non-zero finite constant as

x\to\infty

? a)

\dfrac{6x^{3}-2}{x^{3}+5}

\dfrac{4x+1}{x^{2}+3}

\dfrac{2-5x^{2}}{7-x}

\dfrac{9+x^{4}}{x^{2}-3}