Cho toán tử tuyến tính f: R3 - R3, f (x, y,z) = (2x; -x+y; 11y-z) a) Chứng minh f là một ánh xạ tuyến tính

b) Cho cơ sở B = ( u1(3;2;1), u2(-2;1;2), u3(1;2;-2) ). Tìm ma trận ánh xạ tuyến tính của (f)B

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

You wanted to draw an enlargement of design that printed on a card that is 4 in by 5

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?