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13-04-2020
Mathematics

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What are the removable discontinuities of the following function?
F(x)= x^2-36/ x^3-36x
A. x=-6, x= 0, and x = 6
B. x=-6 and x = 6
C. x = 0 and x = -6
D. x = 0 and x = 6

Respuesta :

21hnc01 21hnc01

13-04-2020

Answer: B

Step-by-step explanation:

f(x)= x^2−36/x^3−36x or

f(x) = (x+6)(x−6)/ x(x^2−36) = (x+6)(x−6)/x(x+6) (x−6)

Discontinuities are x=0, x=−6, x=6

f(x)= (x+6)(x−6)/x(x+6)(x−6)=1/x;x≠0

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