Tính \(\int {\frac{1}{{4 - 2x}}d{\rm{x}}} .\)

Tính \(\int {\frac{1}{{4 - 2x}}d{\rm{x}}} .\)
A. \( - 2\ln \left| {4 - 2{\rm{x}}} \right| + C.\)
B. \(\frac{1}{2}\ln \left| {4 - 2{\rm{x}}} \right| + C.\)
C. \(\ln \left| {4 - 2{\rm{x}}} \right| + C.\)
D. \( - \frac{1}{2}\ln \left| {x - 2} \right| + C.\)

Ta có: \(\int {\frac{1}{{4 - 2{\rm{x}}}}d{\rm{x}}} = \int {\frac{1}{{ - 2{\rm{x + 4}}}}d{\rm{x}}} = - \frac{1}{2}\ln \left| {4 - 2x} \right| + C = - \frac{1}{2}\ln \left| {x - 2} \right| + C.\)