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The graph of f(x) = 1/x cos sqrt(x ^ 2 - 1) continuous for

all real numbers
all real numbers where x =0 .
all real numbers where - 1 <= x <= 1
all real numbers where x <= - 1; x >= 1

Sagot :

Answer:

D. all real numbers where x ≤ –1 or x ≥ 1.

Step-by-step explanation:

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