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Concept explainers
(a)
To find: The graph of the parametric equations, initial and terminal points. Also, indicate the direction in which the curve is traced.
(a)
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Answer to Problem 19E
The graph of the parametric equations is shown in figure (1), initial point is
Explanation of Solution
Given information: The equations are
Calculation:
Use the following step to graph the parametric equations by graphing calculator.
Step 1: First press the “ON” button graphical calculator.
Step 2: Press the
Step 3: Press
Step 4: Press
Figure (1)
If
Since,
Therefore, the graph of the parametric equations is shown in figure (1), initial point is
(b)
To find: The Cartesian equation for a curve that contains the parameterized curve and the portion of the graph of the Cartesian equation that is traced by the parameterized curve.
(b)
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Answer to Problem 19E
The Cartesian equation for a curve that contains the parameterized curve is
Explanation of Solution
Given information: The equations are
Calculation:
Rewrite the equation
Substitute
As shown in the graph, the parameterized curve only traces the portion of the Cartesian equation for
Therefore, the Cartesian equation for a curve that contains the parameterized curve is
Chapter 1 Solutions
Calculus: Graphical, Numerical, Algebraic
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