![a. Write the vector (-17, –18, 28) as a linear combination of a1 = (-4, -1,5), a2 = (-2, –3, 1) and<br>az = (-1,1, –3). Express your answer in terms of the named vectors. Your answer should be in the form<br>4a1 + 5a2 + 6ả3, which would be entered as 4a1 + 5a2 + 6a3.<br>%3D<br>(-17, – 18, 28)<br>b. Represent the vector (-17, –18, 28) in terms of the ordered basis<br>B = {(-4, –1, 5) , (-2, –3, 1),(-1,1, –3)}. Your answer should be a vector of the general form<br><1,2,3>.<br>[(-17, —18, 28)]в<br>](https://s3.us-east-1.amazonaws.com/storage.unifolks.com/qimg-008/008_pmi8xz0-asbj2jnr.png)
Extracted text: a. Write the vector (-17, –18, 28) as a linear combination of a1 = (-4, -1,5), a2 = (-2, –3, 1) and az = (-1,1, –3). Express your answer in terms of the named vectors. Your answer should be in the form 4a1 + 5a2 + 6ả3, which would be entered as 4a1 + 5a2 + 6a3. %3D (-17, – 18, 28) b. Represent the vector (-17, –18, 28) in terms of the ordered basis B = {(-4, –1, 5) , (-2, –3, 1),(-1,1, –3)}. Your answer should be a vector of the general form <1,2,3>. [(-17, —18, 28)]в