Tìm nguyên hàm của hàm số \(f(x) = \frac{1}{{{x^2} - x - 2}}\).
A. \(\int {f(x)dx = \frac{1}{3}\ln \left| {\frac{{x + 1}}{{x - 2}}} \right| + C}\)
B. \(\int {f(x)dx = \frac{1}{3}\ln \left| {\frac{{x - 2}}{{x + 1}}} \right| + C}\)
C. \(\int {f(x)dx = \frac{1}{3}\ln \left| {\frac{{x - 1}}{{x + 2}}} \right| + C}\)
D. \(\int {f(x)dx = \ln \left| {\frac{{x - 2}}{{x + 1}}} \right| + C}\)
A. \(\int {f(x)dx = \frac{1}{3}\ln \left| {\frac{{x + 1}}{{x - 2}}} \right| + C}\)
B. \(\int {f(x)dx = \frac{1}{3}\ln \left| {\frac{{x - 2}}{{x + 1}}} \right| + C}\)
C. \(\int {f(x)dx = \frac{1}{3}\ln \left| {\frac{{x - 1}}{{x + 2}}} \right| + C}\)
D. \(\int {f(x)dx = \ln \left| {\frac{{x - 2}}{{x + 1}}} \right| + C}\)