Which of the following functions has an oblique asymptote of y=x+3y=x+3y=x+3?
f(x)=x2+3x−1f(x) = \frac{x^2+3}{x-1}f(x)=x−1x2+3
f(x)=x2+4x+3x−1f(x) = \frac{x^2+4x+3}{x-1}f(x)=x−1x2+4x+3
f(x)=x2+2x−3x−1f(x) = \frac{x^2+2x-3}{x-1}f(x)=x−1x2+2x−3
f(x)=x2+3xx+1f(x) = \frac{x^2+3x}{x+1}f(x)=x+1x2+3x