Chapter 3: Problem 44
Which number is smaller, \(\frac{1}{50^{300}}\) or \(\frac{1}{151^{233}} ?\)
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Chapter 3: Problem 44
Which number is smaller, \(\frac{1}{50^{300}}\) or \(\frac{1}{151^{233}} ?\)
These are the key concepts you need to understand to accurately answer the question.
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Involve the factorial function \(x !\), which is defined for whole numbers \(x\) as $$ x !=\left\\{\begin{array}{ll} 1, & \text { if } x=0 \\ x \cdot(x-1) \cdot(x-2) \cdot \cdots \cdot \cdot 3 \cdot 2 \cdot 1, & \text { if } x \geq 1 \end{array}\right. $$ For example, \(3 !=3 \cdot 2 \cdot 1=6\) and \(5 !=5 \cdot 4 \cdot 3 \cdot 2 \cdot 1=120\) During the 30 -minute period before a Broadway play begins, the members of the audience arrive at the theater at the average rate of 12 people per minute. The probability that \(x\) people will arrive during a particular minute is given by \(P(x)=\frac{12^{x} e^{-12}}{x !} .\) Find the probability, to the nearest \(0.1 \%\) that a. 9 people will arrive during a given minute. b. 18 people will arrive during a given minute.
Sketch the graph of each function. $$f(x)=3^{x}$$
Sketch the graph of each function. $$f(x)=\left(\frac{2}{3}\right)^{x}$$
The distance \(s\) (in feet) that the object in Exercise 32 will fall in \(t\) seconds is given by \(s=64 t+128\left(e^{-t / 2}-1\right)\) a. Use a graphing utility to graph this equation for \(t \geq 0\) b. Determine, to the nearest 0.1 second, the time it takes the object to fall 50 feet. c. Calculate the slope of the secant line through \((1, s(1))\) and \((2, s(2))\) d. \(\quad\) Write a sentence that explains the meaning of the slope of the secant line you calculated in \(c .\)
Make use of the factorial function, which is defined as follows. For whole numbers \(n\), the number \(n !\) (which is read "n factorial") is given by $$n !=\left\\{\begin{array}{ll} n(n-1)(n-2) \cdots 1, & \text { if } n \geq 1 \\\1, & \text { if } n=0 \end{array}\right.$$Thus, \(0 !=1\) and \(4 !=4 \cdot 3 \cdot 2 \cdot 1=24\) A study shows that the number of people who arrive at a bank teller's window averages 4.1 people every 10 minutes. The probability \(P\) that exactly \(x\) people will arrive at the teller's window in a given 10 -minute period is $$P(x)=\frac{4.1^{x} e^{-4.1}}{x !}$$ Find, to the nearest \(0.1 \%,\) the probability that in a given 10-minute period, exactly a. 0 people arrive at the window. b. 2 people arrive at the window. c. 3 people arrive at the window. d. 4 people arrive at the window. e. 9 people arrive at the window. As \(x \rightarrow \infty,\) what does \(P\) approach?
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