Let P(3, 4) be a point on the circle x2 + y2 = 25 (see figure). (a)
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Let P(3, 4) be a point on the circle x2 + y2 = 25 (see figure).
(a) What is the slope of the line joining P and O(0, 0)?
(b) Find an equation of the tangent line to the circle at P.
(c) Let Q(x, y) be another point on the circle in the first quadrant. Find the slope mx of the line joining P and Q in terms of x.
(d) Calculate lim x→3 mx. How does this number relate to your answer in part (b)?
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Related Book For
Calculus Of A Single Variable
ISBN: 9781337275361
11th Edition
Authors: Ron Larson, Bruce H. Edwards
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