Biết \(\int{f\left( x \right)\,\text{d}x=2x\ln \left( 3x-1 \right)+C}\) với \(x\in \left( \frac{1}{9};+\infty \right)\). Tìm khẳng định đúng trong các khẳng định sau.
A.\(\int{f\left( 3x \right)\,\text{d}x=2x\ln \left( 9x-1 \right)+C.}\)
B.\(\int{f\left( 3x \right)\,\text{d}x=6x\ln \left( 3x-1 \right)+C.}\)
C.\(\int{f\left( 3x \right)\,\text{d}x=6x\ln \left( 9x-1 \right)+C.}\)
D. \(\int{f\left( 3x \right)\,\text{d}x=3x\ln \left( 9x-1 \right)+C.}\)
A.\(\int{f\left( 3x \right)\,\text{d}x=2x\ln \left( 9x-1 \right)+C.}\)
B.\(\int{f\left( 3x \right)\,\text{d}x=6x\ln \left( 3x-1 \right)+C.}\)
C.\(\int{f\left( 3x \right)\,\text{d}x=6x\ln \left( 9x-1 \right)+C.}\)
D. \(\int{f\left( 3x \right)\,\text{d}x=3x\ln \left( 9x-1 \right)+C.}\)
Loga
Hóa Học lớp 12
