DapanC . – 40 –
2(6)Dapan B . – 41 – 3(6)Dapan A. - 42 – 4(6)Chuong 7: Phuong phap toa do trong khong gianDap an C. – 43 – 1(7)
Dap an A. – 44 –
2(7)Dapan B . – 45 – 3(7)DapanC . – 46 – 4(7)
Dap an C . – 47 – 5(7)DapanC . – 48 – 6(7)Dapan B . – 49 – 7(7)Chon
dap an B[r]