The parametric equations of a curve are x = at, y = at? where a is a positive constant. The points P(ap, ap) and Q(aq, aqʻ) lie on the curve. Find, and simplify an expression, in terms of p and q, for the gradient of the chord PQ. Deduce, from this expression, the gradient of the curve at the point Q. [q +p, 2q]

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.4: Plane Curves And Parametric Equations
Problem 35E
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Full solution please. Answer is (q+p , 2q). Thank you :)
The parametric equations of a curve are x = at, y = at2 where a is a positive constant. The
points P(ap, ap-) and Q(aq, aq) lie on the curve. Find, and simplify an expression, in terms
of p and q, for the gradient of the chord PQ. Deduce, from this expression, the gradient of
the curve at the point Q.
[q +p, 2q]
Transcribed Image Text:The parametric equations of a curve are x = at, y = at2 where a is a positive constant. The points P(ap, ap-) and Q(aq, aq) lie on the curve. Find, and simplify an expression, in terms of p and q, for the gradient of the chord PQ. Deduce, from this expression, the gradient of the curve at the point Q. [q +p, 2q]
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