The values of x for which the function
\(f\left( x \right) = \frac{{{x^2} - 3x - 4}}{{{x^2} + 3x - 4}}\)
Which of the following is/are correct?
1
f(x) is continuous at x = 1
2
f(x) is continuous at x = 4
3
f(x) is not continuous at x = -4
4
f(x) is not continuous at x = 1