eval, deval

eval(obj[,prec])

deval(obj)

:: obj ¤ÎÃͤÎɾ²Á.

return

¿ô¤¢¤ë¤¤¤Ï¼°

obj

°ìÈ̤μ°

prec

À°¿ô

• obj ¤Ë´Þ¤Þ¤ì¤ëÈ¡¿ô¤ÎÃͤò²Äǽ¤Ê¸Â¤êɾ²Á¤¹¤ë.
• deval ¤ÏÇÜÀºÅÙÉâÆ°¾®¿ô¤ò·ë²Ì¤È¤·¤Æ eval ¤Î¾ì¹ç, Í­Íý¿ô¤Ï¤½¤Î¤Þ¤Þ»Ä¤ë.
• eval ¤Ë¤ª¤¤¤Æ¤Ï, ·×»»¤Ï PARI (section pari) ¤¬¹Ô¤¦. deval ¤Ë¤ª¤¤¤Æ¤Ï, ·×»»¤Ï C ¿ô³Ø¥é¥¤¥Ö¥é¥ê¤Î´Ø¿ô¤òÍѤ¤¤Æ¹Ô¤¦.
• deval ¤ÏÊ£ÁÇ¿ô¤Ï°·¤¨¤Ê¤¤.
• eval ¤Ë¤ª¤¤¤Æ¤Ï, prec ¤ò»ØÄꤷ¤¿¾ì¹ç, ·×»»¤Ï, 10 ¿Ê prec ·åÄøÅ٤ǹԤï¤ì¤ë. prec ¤Î»ØÄ꤬¤Ê¤¤¾ì¹ç, ¸½ºßÀßÄꤵ¤ì¤Æ¤¤¤ëÀºÅ٤ǹԤï¤ì¤ë. (See section setprec.)

• °·¤¨¤ëÈ¡¿ô¤Ï, ¼¡¤ÎÄ̤ê.

  sin, cos, tan, asin, acos, atan, sinh, cosh, tanh, asinh, acosh, atanh, exp, log, pow(a,b) (a^b)

• °Ê²¼¤Îµ­¹æ¤ò¿ô¤È¤·¤Æɾ²Á¤Ç¤­¤ë. ¤¿¤À¤· @i ¤ò°·¤¨¤ë¤Î¤Ï eval, deval ¤Î¤ß¤Ç¤¢¤ë.

  @i

  µõ¿ôñ°Ì

  @pi

  ±ß¼þΨ

  @e

  ¼«Á³Âпô¤ÎÄì

[118] eval(exp(@pi*@i));   
-1.0000000000000000000000000000
[119] eval(2^(1/2));
1.414213562373095048763788073031
[120] eval(sin(@pi/3));
0.86602540378443864674620506632
[121] eval(sin(@pi/3)-3^(1/2)/2,50);
-2.78791084448179148471 E-58
[122] eval(1/2);
1/2
[123] deval(sin(1)^2+cos(1)^2);
1

»²¾È

section ctrl, section setprec, section pari.

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