a) f(x) = 17 + 3x^2 - 13x^3 - 6x^4
b) f(x) = (5x^2-7x+2)/(4x^2-2)
c) e^x
all of them are asking for two answers. the first as x to -infinity and the second as x to infinity.
thank you thank you =)
Have you done these kinds of limits before?
a) Which term dominates the others as x approaches +/- infinity?
b) Which term in denominator dominates, which term in numerator..?
c) If it's not obvious.. which I guess it's not since you're asking.. just graph it. Then justify it.
This might help, I found it w/ google search and seems good at a glance
Limits to Infinity