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°ÇÃà Architecture


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Type1 Type2
ÀÌÂ÷ ÇÔ¼ö y = ax^2+bx+c ÀÇ µÎ ±ÙÀÌ x1, x2 ÀÌ°í, ÃÖ´ë(ÃÖ¼Ò)°ªÀÌ ym ÀÏ ¶§, °è¼ö a, b, c ¸¦ ±¸ÇÑ´Ù.

µÎ ±ÙÀÌ x1, x2 À̹ǷÎ,

k(x-x1)(x-x2) = 0

x = (x1+x2)/2 ¿¡¼­ ÃÖ´ë(ÃÖ¼Ò)°ªÀÌ µÇ¹Ç·Î,

(k/4)(x2-x1)(x1-x2) = ym

k = 4*ym/((x1-x2)(x2-x1)) = -4*ym/(x1-x2)^2

°¡ µÈ´Ù.

µû¶ó¼­,

y = kx^2-k(x1+x2)x+kx1x2

a = k = -4*ym/(x1-x2)^2
b = -k(x1+x2) = 4*ym*(x1+x2)/(x1-x2)^2)
c = kx1x2 = -4*ym*x1*x2/(x1-x2)^2

ÀÌ µÈ´Ù.
¢¹ input data


¡à a=k, b, c






¡à check ym






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¡Ø Input data on
red underlines.

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