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为了让更多的同志了解这一学科,下面将談些仅仅涉及到初等数学的諾模图。 1.三平图:假设在坐标系XOY上有三图尺代表三变量U,V,W,具有下列条件: ⅰ) 三图尺互相平行,其間距离为d_1及d_2,且H=d_1+d_2。ⅱ) 三图尺之原点,A_0,B_0,C_0在X軸上,且A_0与坐标原点重合。ⅲ) 貫线l与三图尺交于三点P_1,P_2,P_3,如图1。求此图所表示之函数关系。
In order for more comrades to understand this subject, we will talk about nomograms that only involve elementary mathematics. 1. Sanping diagram: Suppose there are three figures on the coordinate system XOY that represent the three variables U, V, W, with the following conditions: i) The three figures are parallel to each other, the distance between them is d_1 and d_2, and H=d_1+d_2. Ii) The origin of the three figures, A_0, B_0, C_0, is on the X-axis, and A_0 coincides with the origin of the coordinates. Iii) Intersecting l and three figures intersect at three points P_1, P_2, P_3, as shown in Figure 1. Find the function relationship represented by this figure.