Jawabanmu

2013-12-08T18:15:41+07:00
 \int\limits^2_1 {x (2x^2+1)^{-1/2} } \, dx
U= 2x^2+1
du=4x dx
1/4 du = x dx
 \int\limits^2_1  \frac{1}{4}  x^{-1/2} \, du
 \frac{2}{1} \frac{1}{4}   x^{1/2}+C =   \frac{1}{2}  \sqrt{2 x^{2} +1} +C
lupa-__- masukin batasnya hehe
C-nya janagn ditulis
masukin batasnya aja