Cho hệ các vector U={ (1,2,4);(0,-1,-3);(2,3,5);(1,0,-2)} . a. Tìm số chiều và một cơ sở W của không gian con sinh bởi hệ vector U.
b. Tim tham số k để u = (2, 3, k ^ 2 + 1) là một tổ hợp tuyến tính của W, và suy ra [u]w.

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.

x = 3 ± √(5+y)