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September 17, 2014

September 17, 2014

Posted by **Anonymous** on Sunday, February 3, 2013 at 10:57pm.

- Calculus -
**Reiny**, Sunday, February 3, 2013 at 11:32pmf ' (x) = 2x - 1

so at (0,0) slope = 2(0) -1 = -1

and at (1,0) slope = 2(1) - 1 = +1

since the slopes are negative reciprocals of each other the two tangents are perpendicular.

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