Set, Relation and FunctionHard
Question
The set of points where f(x)= 
is differentiable is
is differentiable is Options
A.(- ∞, 0) ∪ (0, ∞)
B.(- ∞, -1) ∪ (-1, ∞)
C.(- ∞, ∞)
D.(0, ∞)
Solution
f(x) = 
⇒ f′(x) = 
∴ f′(x)exist at everywhere.
⇒ f′(x) = ∴ f′(x)exist at everywhere.
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