# Answer to Question #13358 in Calculus for Anandi

Question #13358

Let f be the function f(x)=x-4/x, y-intercept, vertical/horizontal asymptotes, sign pattern f'x to determine intervals where f rises/falls and local extrema. sing pattern f''x where the graph f is concave up/down and the inflection point

Expert's answer

Y-intercept is (-2, 0) and (2, 0)

f'x= ∫(x- 4/x)dx=1

f``x=∫(x- 4/x)dx =0

f'x= ∫(x- 4/x)dx=1

f``x=∫(x- 4/x)dx =0

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