一提到应用题,同学们自然想到列方程(一元一次方程、一元二次方程、二元一次方程组、分式方程等),但有些应用题用列方程是不易解决的,需要另辟蹊径.下面的三个例子说明用分式知识解决的问题.不妨姑且称为分式应用题.例1建筑学要求.家用住宅房间窗户的面积M必须小于房间地面的面积n,但窗户的面积与地面面积的比值越大.采光条件越好.小 Upon mentioning the application questions, the students naturally thought of the equations listed (unary first-order equations, unary quadratic equations, binary first-order equations, fractional equations, etc.), but some application-specific column equations are not easy to solve. The three examples illustrate the problems solved with fractional knowledge. It may be referred to as a fractional application. Example 1 Architecture Requirements. The area of ​​a residential house window, M, must be less than the area n of the room floor, but the area and floor area of ​​the window. The greater the ratio, the better the lighting conditions.