Homework Help: Calculus

Posted by Jake on Wednesday, February 29, 2012 at 12:09am.

Let f(x)=(2x^3-x^2+2x+1)/(x^2+1). What is the equation of the oblique asymptote of f(x)?

Can someone show me how to do the long division one for this question. I have always used synthetic division but realized there are some questions that require to do long division.

Calculus - Steve, Wednesday, February 29, 2012 at 12:08pm
as x gets very large, the higher powers dominate, making the lower powers insignificant. So, for large x,

f(x) looks very much like 2x^3/x^2 = 2x

As x gets bigger and bigger, y gets closer and closer to just 2x.

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