手机套餐费用计算模型

GeoGebra 命令及参数

1. Polygon((instructionEdge, y(Corner[1])), (instructionEdge, y(Corner[3])), Corner[4], Corner[1]) → instruction, instructionRight, instructionTop, instructionLeft, instructionBottom
2. Line((x(Corner[1]) + ((2 * indent) * screenwidth), 0), yAxis) → align1
3. Line((x(Corner[1]) + ((3 * indent) * screenwidth), 0), yAxis) → align2
4. Line((x(Corner[1]) + ((4 * indent) * screenwidth), 0), yAxis) → align3
5. Ray((includedMinutes, 0), Vector[(1, 0)]) → trapPtD
6. Point(trapPtD) → D
7. TableText({{"\textit{y}= " + monthlyFee + "+" + minuteRate + " \textit{x} ", " \text{Original equation}"}, {"\textit{y}= " + monthlyFee + "+" + minuteRate + "(" + includedMinutes + ") ", " \text{Substitute }" + includedMinutes + " \text{ for }\textit{x}."}, {"\textit{y}=" + yattransition + " ", " "}}, "c") → text10a
8. TableText({{"\textit{y}= " + monthlyFee + "+" + minuteRate + " \textit{x} ", " \text{Original equation}"}, {"\textit{y}= " + monthlyFee + "+" + minuteRate + "(" + xchoice + ") ", " \text{Substitute }" + xchoice + " \text{ for }\textit{x}."}, {"\textit{y}=" + ychoice + " ", " "}}, "c") → text16b