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Math Software  -> Graph Function (Graph Calculus) -> Point Of Intersection
Function Grapher and Visual Calculus have the ability of calculating and graphing the points of intersection 
and the area of intersectant field.
The following figure shows the relationship between  two 2D curves.

                
The calculating results are shown in Result Editor
    Function y=sin(x)
    Function2 y=cos(x)
         Point of intersection: x=-5.497795,y=.703576
         Point of intersection: x=-2.356066,y=-.7046865
         Point of intersection: x=.7853208,y=.7061476
         Point of intersection: x=3.926907,y=-.7038306
         Area of intersectant field is 6.070831

Math Software -> Graph Function (Graph Calculus) -> Point Of Intersection

 

 

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