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Let f(x)=√sgn(ax2+ax+1)cot−1(x2−a).If f(x) is continuous for all x∈R, then number of integer(s) in the set of a, is

Answer» Let f(x)=√sgn(ax2+ax+1)cot−1(x2−a).

If f(x) is continuous for all x∈R, then number of integer(s) in the set of a, is


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