Question: Solve the linear system
, where a,b and c are arbitrary constants.
The solution of the linear system is ,
Consider the linear system.
The matrix form of the system is,
Consider the matrix,
Perform the row reduction operation.
The values are,
Hence, is the solution of the linear system, .
If you sell two cows and five sheep and you buy pigs, you gain coins. If you sell three cows and three pigs and buy nine sheep, you break even. If you sell six sheep and eight pigs and you buy five cows, you lose coins. What is the price of a cow, a sheep, and a pig, respectively? (Nine Chapters, Chapter 8, Problem 8)
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