1.

Let f(x) = sgn (x) and g (x) = x(x^(2)-5x+6). The function f(g(x)) is discontinuous at

Answer»

Infinitely many points
Exactly one point
Exactly three points
No point

Solution :`becauseg(X)`is CONTINUOUS is R and f(x) is discontinuouse at x = 0.
`THEREFORE f{g(x)}` is discontinuous at the points where g (x) =0 OR at x = 0,2,3.


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