Problem

Linear systems are particularly easy to solve when they are in triangular form (i.e., al...

Linear systems are particularly easy to solve when they are in triangular form (i.e., all entries above or below the diagonal are zero).

a. Solve the lower triangular system

by forward substitution, finding x₁ first, then x₂, then x₃, and finally x₄.

b. Solve the upper triangular system

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Solutions For Problems in Chapter 1.1

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