Prove that u v2 u 2 v2 2u v
Chapter 10, Problem 83(choose chapter or problem)
Spiral of Archimedes The curve represented by the equation \(r=a \theta\), where a is a constant, is called the spiral of Archimedes.
(a) Use a graphing utility to graph \(r=\theta\), where \(\theta \geq 0\). What happens to the graph of \(r=a \theta\) as a increases? What happens if \(\theta \leq 0\)?
(b) Determine the points on the spiral \(r=a \theta(a>0, \theta \geq 0)\), where the curve crosses the polar axis.
(c) Find the length of \(r=\theta\) over the interval \(0 \leq \theta \leq 2 \pi\).
(d) Find the area under the curve \(r=\theta\) for \(0 \leq \theta \leq 2 \pi\).
Text Transcription:
r=a theta
r=theta
theta >= 0
theta <= 0
r=a theta(a>0, theta >= 0)
0 <= theta <= 2 pi
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