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ÀÛ¼ºÀÚ Uploader : freeboard ÀÛ¼ºÀÏ Upload Date: 2017-11-14º¯°æÀÏ Update Date: 2017-11-14Á¶È¸¼ö View : 542

±×¸²°ú °°ÀÌ °¡·Î La, ¼¼·Î Lb ÀÎ Á÷»ç°¢Çü ¸ð¾çÀ» Á¢¾î, À­ ºÎºÐÀÌ ¾ø´Â »óÀÚ ¸ð¾çÀ» ¸¸µé ¶§, ºÎÇÇ V °¡ ÃÖ´ë°¡ µÇµµ·Ï ³ôÀÌ h °ªÀ» Á¤ÇÑ´Ù.

La = a+2h À̹ǷÎ, a = La-2h
Lb = b+2h À̹ǷÎ, b = Lb-2h

V = a*b*h = (La-2h)(Lb-2h)h
 = La*Lb*h - 2*(La+Lb)*h^2 + 4h^3

V ¸¦ ¹ÌºÐÇÏ°í ¹ÌºÐ °ªÀÌ 0ÀÎ h °ªÀ» ±¸ÇÑ´Ù.

V¡Ç = 12h^2 - 4(La+Lb)h + La*Lb

12h^2 - 4(La+Lb)h + La*Lb = 0

h^2 - (1/3)(La+Lb)h + La*Lb/12 = 0

±ÙÀÇ °ø½Ä¿¡ ´ëÀÔÇϸé,

h = ((1/3)(La+Lb)¡¾((-(1/3)(La+Lb))^(2) - (La*Lb/3))^(1/2))/(2)

0 < h < La/2 ÀÌ°í 0 < h < Lb/2 À̹ǷÎ, ¡¾ Áß - ÇÑ °ªÀÌ µÈ´Ù.

*** Âü°í¹®Çå[References] ***

h = ((1/3)(La+Lb)-((-(1/3)(La+Lb))^(2) - (La*Lb/3))^(1/2))/(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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