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• help with multiplying polynomials in lisp

  - by iulia

  for example:( 3x2-5x+2)(7x+1) and you simlify it like this: ((3 2)(-5 1)(2 0))((7 1)(1 0)) ((21 3)(3 2)(-35 2)(-5 1)(14 1)(2 0)) (21 3)(32 2)(9 1)(2 0) and you get this answer: 21x2+32x2+9x+2 i need this solution in lisp please help

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• Help With Lisp Code for a Binary Tree

  - by iulia

  I have (setq l2 '(1 (2 b (c 1 b))(a (1 2) d))) ( defun drumuri (l3) ( cond ( (atom l3) ( cons l3 nil)) ( t ( append ( cons ( car l3 ) nil) ( drumuri ( cadr l3)) (cons (car l3)nil) ( drumuri ( caddr l3)) )))) ( drumuri l2) and it gives me: Break 2 [4]> DRUMURI Break 2 [4]> (1 2 B 2 C 1 C B 1 A 1 2 1 NIL A D) but i need: ((1 2 B)(1 2 C 1)(1 2 C B)(1 A 1 2)(1 A D))

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