如题所述
解ï¼ï¼2ï¼æååï¼x+1ï¼^2+(y+1/2)^2=5/4,æ以åå¾ä¸ºæ ¹å·5/2.
(5)ç´æ¥ä¹å¼ï¼åéa^2-3/2åéb^2-1/2åéa*åéb=0ï¼ç¨åéaç模çäºæ ¹å·2åébçæ¨¡å¸¦å ¥å¾ï¼1/2åéb^2-æ ¹å·2/2åéb^2*cos夹è§=0,cos夹è§=æ ¹å·2/2.æ以夹è§ä¸ºÏ/4.
(5)ç´æ¥ä¹å¼ï¼åéa^2-3/2åéb^2-1/2åéa*åéb=0ï¼ç¨åéaç模çäºæ ¹å·2åébçæ¨¡å¸¦å ¥å¾ï¼1/2åéb^2-æ ¹å·2/2åéb^2*cos夹è§=0,cos夹è§=æ ¹å·2/2.æ以夹è§ä¸ºÏ/4.
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