Question

Can someone explain the steps, already have the answer

Answer 1

f(x) = (6*sqrt(x) - x^-7)/(9x-4)
f(x) = (6*sqrt(x) - 1/x^7)/(9x-4), dividing by x the numerator and denominator:
f(x) = (6*sqrt(1/x) - 1/x^8)/(9- 4/x)
when x -> infinity
f(x->infinity) -> 0

Answer 2

thanks!