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Robin
Mathematics
8 March, 15:54
Slope of y=x^2-2x-3 at P (2,-3)
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Emelia Strickland
8 March, 16:05
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Recall that the derivative of this function, evaluated at x=2, is the slope of the tangent line to the graph of the function.
Thus, we begin by differentiating y=x^2-2x-3:
(dy/dx) = 2x - 2
Evaluated at x=2, (dy/dx) = (2) (2) - 2 = 4-2 = 2.
The slope of the tangent line to the graph of this function at (2, - 3) is 2.
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