x1์ด ์‰˜๋„ ๋˜‘๊ฐ™๊ณ  ์„ฑ๋Šฅ๋„ ์•ˆ๊ฟ‡๋ฆฐ๋‹ค๊ณ ํ•˜๋Š”๋ฐ ๊ฑ x1์‚ฌ๋Š”๊ฒŒ ์ •๋ฐฐ?