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a/x + b/y = 1 ÀÏ ¶§, x + y ÀÇ ÃÖ¼Ò°ª ±¸Çϱâ

ÀÛ¼ºÀÚ Uploader : chocopi ÀÛ¼ºÀÏ Upload Date: 2019-11-10º¯°æÀÏ Update Date: 2023-09-09Á¶È¸¼ö View : 373

µÎ ¾çÀÇ ½Ç¼ö x, y ¿¡ ´ëÇØ, a/x + b/y = 1 ÀÏ ¶§, x + y ÀÇ ÃÖ¼Ò°ª ±¸Çϱâ

x+y = k ¶ó ÇÏ°í, a/x + b/y = 1 À» ¾çº¯¿¡ °öÇØÁÖ¸é,

(a/x + b/y)(x+y) = k

ÀÌ µÈ´Ù. À̸¦ Àü°³Çϸé,

a + a*y/x + b*x/y + b = k

(a+b)+a*y/x+b*x/y = k

ÀÌ µÈ´Ù.

»ê¼úÆò±Õ°ú ±âÇÏÆò±ÕÀÇ °ü°è¸¦ ÀÌ¿ëÇϸé,

(a*y/x)+(b*x/y) ¡Ã 2*((a*y/x)*(b*x/y))^(1/2) = 2*(a*b)^(1/2)

À̹ǷÎ,

k ¡Ã (a+b)+2*(a*b)^(1/2)

°¡ µÈ´Ù.

ÃÖ¼Ò°ª kmin Àº

kmin = (a+b)+2*(a*b)^(1/2)

ÀÌ´Ù.


*** Âü°í¹®Çå[References] ***

kmin = (a+b)+2*(a*b)^(1/2)
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º¯¼ö¸í Variable º¯¼ö°ª Value º¯ ¼ö ¼³ ¸í Description of the variable


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