如题所述
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x^2/a^2+y^2/b^2=1
å ¶ä¸ä¸ç¹(x0ï¼y0)å¤çå线æ¹ç¨ä¸ºï¼
x0·x/a^2+y0·y/b^2=1
â´ æ¬é¢ä¸ï¼å线æ¹ç¨ä¸ºï¼2x/16+3y/12=1
å³ï¼x/8+y/4=1