Determine the range of f(x)=log3(x2−10x+26)+1f(x) = \log_3(x^2 - 10x + 26) + 1f(x)=log3(x2−10x+26)+1.
All real numbers
Interval [1,∞)[1, \infty)[1,∞)
Interval (1,∞)(1, \infty)(1,∞)
Interval (−∞,1](-\infty, 1](−∞,1]