Show that the graphs of the 2 equations y=x and y=1/x have tangent lines that are perpendicular to each other
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Show that the graphs of the 2 equations y=x and y=1/x have tangent lines that are perpendicular to each other

[From: ] [author: ] [Date: 11-09-19] [Hit: ]
......
HELP! :)

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Take the derivative of both lines:

y' = 1

g' = -1/(x^2)

At x = 1, y' = 1 and g' = -1 which are negative reciprocals of each other.
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