...Cau 364: (SO GD&DT BINH PHUOC - Lan 2 nam 2017) Cho tich p...
pihint=∫(√(1+x^2))/(x^2)dx Cau 364: (SO GD&DT BINH PHUOC - Lan 2 nam 2017) Cho tich phan I=dr. Neu doi bien so =thi A I=-∫(x^2dx^2dx^2-1)/ A. I =- B. I=∫_(1/t^(1/t)t^2dt I=∫_(π/2^(π/2)n/(t^2-1) t=-3/4(AH)/(x^2-1) 相...