The systems in Exercises 25 and 26 exhibit a “lower triangular” pattern that makes them easy to solve by forward substitution. (We will encounter forward substitution again in Chapter 3.) Solve these systems.
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Linear Algebra: A Modern Introduction
- Write a uniform motion problem similar to Example 4.15 that relates to where you live with your friends or family members. Then translate to a system of equations and solve it.arrow_forwardThe number of sides x and the combined number of sides and diagonals y for each of three regular polygons are shown below. Write a system of linear equations to find an equation of the form y=ax2+bx+c that represents the relationship between x and y for the three polygons.arrow_forwardThese exercises refer to the following system: If we add 2 times the first equation to the second equation. The second equation becomes _______=____.arrow_forward
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