Teaching DSSSB TGT Mock Test 2025 Mathematics Limit and Continuity Continuity of a function

The function f(x) = cot x is discontinuous on the set

1
{x = nπ ∶ n ∈ Z}
2
{x = 2nπ ∶ n ∈ Z}
3
\(\rm \left\{x = (2 n+1) \frac{\pi}{2} ; n \in Z \right\}\)
4
\(\rm \left\{x = \frac{n \pi}{2} ; n \in Z \right\}\)
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