Classifying a Discontinuity
Which of the following statements is true about the function f defined by ?
A
f(x) is discontinuous at all odd multiples of π/2
B
f(x) is continuous for all real values of x
C
f(x) has an essential (infinite) discontinuity at x = π/2
D
f(x) has a removable discontinuity at x = π/2
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