Show that the tangents to the curve y = 7x3 + 11 at the points where x = 2 and

x = – 2 are parallel.

The given curve y = 7x3 + 11

Then, the slope of the tangent to the given curve at x = 4 is given by,



It is cleared that the slopes of the tangents at the points where x = 2 and x = -2 are equal.


Therefore, the two tangents are parallel.


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