Chapter 6: Problem 34
Use a graphing utility to graph the polar equation. Identify the graph. \(r=\frac{12}{2-\cos \theta}\)
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Chapter 6: Problem 34
Use a graphing utility to graph the polar equation. Identify the graph. \(r=\frac{12}{2-\cos \theta}\)
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Consider the path of a projectile projected horizontally with a velocity of \(v\) feet per second at a height of \(s\) feet, where the model for the path is \(x^{2}=-\frac{v^{2}}{16}(y-s)\) In this model (in which air resistance is disregarded), \(y\) is the height (in feet) of the projectile and \(x\) is the horizontal distance (in feet) the projectile travels. A ball is thrown from the top of a 100 -foot tower with a velocity of 28 feet per second. (a) Find the equation of the parabolic path. (b) How far does the ball travel horizontally before striking the ground?
Show that \(a^{2}=b^{2}+c^{2}\) for the ellipse \(\frac{x^{2}}{a^{2}}+\frac{y^{2}}{b^{2}}=1\) where \(a>0, b>0,\) and the distance from the center of the ellipse (0,0) to a focus is \(c\).
Find the standard form of the equation of the ellipse with the given characteristics. Center: (3,2)\(; a=3 c ;\) foci: (1,2),(5,2)
The first artificial satellite to orbit Earth was Sputnik I (launched by the former Soviet Union in 1957 ). Its highest point above Earth's surface was 947 kilometers, and its lowest point was 228 kilometers (see figure). The center of Earth was at one focus of the elliptical orbit, and the radius of Earth is 6378 kilometers. Find the eccentricity of the orbit.
Sketch the graph of the ellipse, using latera recta. \(9 x^{2}+4 y^{2}=36\)
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