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| Math Central | Quandaries & Queries |
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Question from Amanda, a student: If f(x)=1/(x-1) then what is the slope of the tangent line at x=-2? |
Amanda,
The slope of the tangent line to y = f(x) at x = -2 is f '(-2) so you need to differentiate f(x). I would first write f(x) = (x - 1)-1 and then differentiate.
Harley
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