์‚ผ์ฐจ๋ฐฉ์ •์‹ ax3+bx2+cx+d=0์—์„œ์˜ ๊ทผ๊ณผ ๊ณ„์ˆ˜์˜ ๊ด€๊ณ„

์‚ผ์ฐจ๋ฐฉ์ •์‹ ax3+bx2+cx+d=0์—์„œ ๊ทผ๊ณผ ๊ณ„์ˆ˜์˜ ๊ด€๊ณ„๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค.

(๋‹จ, ์‚ผ์ฐจ๋ฐฉ์ •์‹ ax3+bx2+cx+d=0์˜ ๊ทผ์€ ฮฑ,ฮฒ,ฮณ์ด๋‹ค.)

 

[1]

ฮฑ+ฮฒ+ฮณ=โˆ’ba

 

[2]

ฮฑฮฒ+ฮฒฮณ+ฮณฮฑ=ca

 

[3]

ฮฑฮฒฮณ=โˆ’da

 


etc-image-0
EDITOR: SCIAN

https://blog.scian.io/

IT LOVER | DEVELOPER | ARTIST

MATH & SCIENCE