If f(x)= 1 ^ -1 (x^2-4x+3)

MATHEMATICS · Single correct · AP · Calculus AB · Limits and Continuity · Limits and Continuity

Problem

If f(x)=1tan⁡−1(x2−4x+3),f(x)=\sqrt{\frac{1}{\tan^{-1}(x^2-4x+3)}}, then f(x)f(x) is continuous for (1) (1,3)(1,3) (2) (−∞,0)(-\infty,0) (3) (−∞,0)∪(3,∞)(-\infty,0)\cup(3,\infty) (4) None of these

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