Start from the four equations xi+1+2ari-xi-1 = i for i = 1,2, 3,4, with ro 5 0. write those equations in their matrix form ax b, then construct the corresponding augmented matrix [a | b], and using elementary row operations find the corresponding (a) (4p) row-echelon matrix, and (b) (4p) reduced-echelon matrix write down the solution of the system of equations from the reduced-echelon matrix

b

step-by-step explanation:

to have more of what you want like money

step-by-step explanation:

save it by not spending on unnecessary stuff and have more

answer: idk

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92