Cho hệ các vector U = {(1, 2, 1);(0, -1,0);(2, 3, 2);(1, 0, 1)}
a. Tìm số chiều và một cơ sở W của không gian con sinh bởi hệ vector U .
b. Tìm tham số k để u = (2, 3, k^2 + 1) là một tổ hợp tuyến tính của W , và suy ra [u] .

The verbal translation for the difference of m and 7 increased by 15

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Janet is rolling a number cube with the numbers one through six she record the numbers after each row if she rolls of keep 48 times how many times should she expect to roll a 4