乐正

Actions speak louder than words.

Sicp-ex1-2

问题

请将下面表达式变换为前缀形式:

$$ \frac{5 + 4 + (2 - (3 - (6 + \frac{4}{5})))}{3(6 - 2)(2 - 7)} $$

解答

1
2
(/ (+ 5 4 (- 2 (- 3 (+ 6 (/ 4 5)))))
   (* 3 (- 6 2) (- 2 7)))

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