Well, if I have a gradient field, then if I try to compute this line integral, I know it will be the value of the function at the end point minus the value at the starting point.
如果有一个梯度场，然后想计算线积分，我知道积分值是,起点的函数值减去终点的函数值。
The minus sign (-) or plus sign (+) before each change corresponds with the file names directly above the line.
每个更改前的减号(-)或加号(+)与行上方的文件名一致。
So I'm looking at all points to satisfy 2 X minus Y equal 0. And I'm often... it's often good to start with which point on the horizontal line, on this horizontal line Y is 0.
找寻所有的点满足2X-Y=0.最好从横坐标上的点为起始，横坐标也就是Y=0。
A minus sign (-) appears in the indicator margin next to the topmost line.
在最顶行旁边的指示器边距中会出现一个减号(-)。
Design scope: west area within the red line range minus the Stadium block, minus the Successful Quality Education building block, minus the roads and buildings in this area.
范围：西区红线范围减去体育馆地块、减去成功素质教育大楼地块、减去道路和建筑。
Design scope: west area within the red line range minus the Stadium block, minus the Successful Quality Education building block, minus the roads and buildings in this area.
范围：西区红线范围减去体育馆地块、减去成功素质教育大楼地块、减去道路和建筑。
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