Hello All,
I have a quistion about quoting.
(%i1) G(x) := x^3 + x^2;
3 2
(%o1) G(x) := x + x
(%i2) F: G$
*** The question is: how to construct 'G(x) using F?
A seems-to-be-right for me answer is wrong:
(%i3) noundisp: true$
(%i4) '(''F)(x);
(%o4) G(x)
(%i5) 'G(x) - '(''F)(x);
(%o5) 'G(x) - G(x)
From lisp point of view they are different (note %g vs $g):
(%i6) :lisp #$'G(x)$;
((%g SIMP) $X)
(%i7) :lisp #$'(''F)(x)$;
(($g SIMP) $X)
extra quoting doesn't help:
(%i8) 'G(x) - '('(''F))(x);
(%o8) 'G(x) - 'G(x)
(%i9) ev(%);
(%o9) 'G(x) - G(x)
but
(%i10) 'G(x) - 'G(x);
(%o10) 0
and
(%i11) :lisp #$'('(''F))(x)$;
((MQAPPLY SIMP) ((MQUOTE SIMP) $g) $X)
Please help!
--
????? ????????, ??????.
http://landau.phys.spbu.ru/~kirr/aiv/
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