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计算机科学 / SICP / 2.5.3 Example: Symbolic Algebra

Exercise 2.88 · 习题

Exercise 2.88: Extend the polynomial system to

include subtraction of polynomials. (Hint: You may find it helpful to define a

generic negation operation.)

练习 2.88:扩展多项式系统以支持多项式的减法。(提示:定义一个通用的求反操作可能会有帮助。)