CPM Homework Help : CALC Problem 8-124

Find the point of intersection of the two lines tangent to $y =\frac { 1 } { 1 + x ^ { 2 } }$ at $x = −1$ and $x = 2$ .

Step 1:

Tangent at $x = − 1$ :

Step 2:

Find tangent at $x = 2$ .

Step 3:

Solve a system of equations to find the point-of-intersection between the two tangents.