Cho hệ các vector U = {(1,2,n);(0,-1,1-n);(2,3,n+1);(1,0, 2-n)}
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]W

He concluded that a heavier object dropped from the same height as a lighter object will land

How many solutions does the nonlinear system of equations graphed bellow have?

The krasnapolski is a top-of-the-line hotel in amsterdam, the netherlands. among their many services, they rent bicycles to guests. the bicycle checkout is open 24 hours per day 7 days per week and has 50 bicycles on hand. on average, 10 guests request a bicycle each day, arriving completely randomly at all times of the day during the spring and summer seasons. guests keep bicycles for four days on average, with a standard deviation of two days. how long does a guest on average have to wait for a bike? a. approximately 24 hours b. approximately 0.033 hours c. approximately 4 days d. approximately 47 minutes