一次函数y=ax+b的图像分别与x轴、y轴交于点M,N,与反比例函数y=k/x的图像相交于点A,B,过点A分别做AC⊥x轴,AE⊥y轴,垂足分别为C,E；过点B分别做BF⊥x轴,BD⊥y轴,垂足分别为F,D,AC与BD交于点K,连接EF.证

一次函数y=ax+b的图像分别与x轴、y轴交于点M,N,与反比例函数y=k/x的图像相交于点A,B,过点A分别做AC⊥x轴,AE⊥y轴,垂足分别为C,E；过点B分别做BF⊥x轴,BD⊥y轴,垂足分别为F,D,AC与BD交于点K,连接EF.证
一次函数y=ax+b的图像分别与x轴、y轴交于点M,N,与反比例函数y=k/x的图像相交于点A,B,过点A分别做AC⊥x轴,AE⊥y轴,垂足分别为C,E；过点B分别做BF⊥x轴,BD⊥y轴,垂足分别为F,D,AC与BD交于点K,连接EF.
证EF∥AB

一次函数y=ax+b的图像分别与x轴、y轴交于点M,N,与反比例函数y=k/x的图像相交于点A,B,过点A分别做AC⊥x轴,AE⊥y轴,垂足分别为C,E；过点B分别做BF⊥x轴,BD⊥y轴,垂足分别为F,D,AC与BD交于点K,连接EF.证
由y=ax+b,y=k/x,可得,ax^2+bx-k=0,x1*x2=-k/a.
由题意可知,E（0,y1）,F（x2,0）,可以求出过EF的直线解析式为
y=-y1x/x2+y1.
点A在双曲线上,所以,y1=k/x1
于是 -y1x/x2=-k/x1*x2=a.
所以,直线EF∥AB.

Leonardo's initial reaction to the defection Inter
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Departure rumors about Leonardo, Moratti response continues to be very intense, following initial denying he heard this news a...

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Leonardo's initial reaction to the defection Inter
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Departure rumors about Leonardo, Moratti response continues to be very intense, following initial denying he heard this news and stated, "Leonardo vacation in Brazil," Leonardo then he can chase a fantasy position, The Inter (Inter @ News) initiated a policy of to find a brand new coach, then, an additional statement stated Moratti Leonardo will remain. In comparison, another party being an event, simply to respond to the term Leonardo, but he is constantly on the leave Inter Milan forward pace.
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"It has yet to state when." Leonardo for the answer is very easy outgoing events, and also the contradiction between Moratti different position, at least now and Inter coach Leonardo's attitude is quite clear. Although not publicly acknowledged, there isn't any publicly denied,air jordan 5, but this short sentence Leonardo has admitted that he and the link between Paris Saint-Germain, why is this so always reveal more details, just as he and Paris aspects of the negotiations haven't however entered the last component with the announcement. Now,jordan basketball, Moratti called "Leonardo isn't in Doha," the defense continues to be shattered, that Leonardo did, and conducted negotiations with Paris Saint-Germain, and also the negotiations remain very deep, "Italian football" and even reveals a much more alarming news, this media quoted the "Equipe" the origin stated, has returned to Brazil's Leonardo,air jordan 9, 15 pm local time will fly back to Europe, with high-level Inter meeting, to finish his function contract to finalize the ultimate details.
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The front of reporters in Qatar also confirmed Leonardo 1 days will figure out what it's all about to Paris Saint-Germain, according to reports in front of reporters,air jordan 6, the chairman from the Paris Saint-Germain club management has brought notice of the formal notice that Leon Nadeau will probably be the club's new manager, while the present team coach Anthony - hole Powell will continue in office. This means that Inter Milan announced the termination with the message with Leonardo can occur anytime, anyplace.

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