Chapter 1: Problem 53
(a) plot the points, (b) find the distance between the points, and (c) find the midpoint of the line segment joining the points. $$ \left(\frac{1}{2}, 1\right),\left(-\frac{5}{2}, \frac{4}{3}\right) $$
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Chapter 1: Problem 53
(a) plot the points, (b) find the distance between the points, and (c) find the midpoint of the line segment joining the points. $$ \left(\frac{1}{2}, 1\right),\left(-\frac{5}{2}, \frac{4}{3}\right) $$
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Use Hooke's Law for springs, which states that the distance a spring is stretched (or compressed) varies directly as the force on the spring. A force of 265 newtons stretches a spring 0.15 meter (see figure). (a) How far will a force of 90 newtons stretch the spring? (b) What force is required to stretch the spring 0.1 meter?
Use the functions given by \(f(x)=x+4\) and \(g(x)=2 x-5\) to find the specified function. $$ (g \circ f)^{-1} $$
(a) find the inverse function of \(f\), (b) graph both \(f\) and \(f^{-1}\) on the same set of coordinate axes, (c) describe the relationship between the graphs of \(f\) and \(f^{-1}\), and (d) state the domain and range of \(f\) and \(f^{-1}\). $$ f(x)=\frac{4}{x} $$
(a) find the inverse function of \(f\), (b) graph both \(f\) and \(f^{-1}\) on the same set of coordinate axes, (c) describe the relationship between the graphs of \(f\) and \(f^{-1}\), and (d) state the domain and range of \(f\) and \(f^{-1}\). $$ f(x)=\frac{6 x+4}{4 x+5} $$
The direct variation model \(y=k x^{n}\) can be described as " \(y\) varies directly as the \(n\) th power of \(x\)," or "y is _____ _____to the \(n\) th power of \(x.\) "
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