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Let f(x) = {:("cos x, if " x ge 0),("-co...

Let `f(x) = {:("cos x, if " x ge 0),("-cos x, if " x lt 0):}`
Which one of the following statements is not true ?

A

a) f(x) is continuous at x = 1

B

b) f(x) is continuous at x = -1

C

c) f(x) is continuous at x = 2

D

d) f(x) is continuous at x = 0

Text Solution

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The correct Answer is:
D
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