Mark the correct alternative in the following:

The value of b for which the function is continuous at every point of its domain, is

Mark the correct alternative in the following:

The function is continuous at x = 0, then k =

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If the function is continuous at each point of its domain, then the value of f(0) is

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If then the set of points discontinuity of the function f(f(f(x))) is

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Let The value which should be assigned to f(x) at so that it is continuous everywhere is