Learning Guide Learning Guide

2.7 Conclusion • 412 x + 2 yyou see that Maple automatically multiplies the constant into theexpression.How can you then deal with such expressions, when you need to factorout constants, or negative signs? Should you need to factor such expressions,try this “clever” substitution.> expr3 := 2*(x + y);expr3 := 2 x + 2 y> subs( 2=two, expr3 );x two + y two> factor(%);two (x + y)2.7 ConclusionIn this chapter you have seen many of the types of objects which Mapleis capable of manipulating, including sequences, sets, and lists. You haveseen a number of commands, including expand, factor, and simplify,that are useful for manipulating and simplifying algebraic expressions.Others, such as map, are useful for sets, lists, and arrays. Meanwhile,subs is useful almost any time.In the next chapter, you will learn to apply these concepts to solvesystems of equations, one of the most fundamental problems in mathematics.As you learn about new commands, observe how the concepts ofthis chapter are used in setting up problems and manipulating solutions.