Chapter 1: Problem 7
Where is the tangent function undefined?
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Chapter 1: Problem 7
Where is the tangent function undefined?
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Finding the inverse of a cubic polynomial is equivalent to solving a cubic equation. A special case that is simpler than the general case is the cubic \(y=f(x)=x^{3}+\) ax. Find the inverse of the following cubics using the substitution (known as Vieta's substitution) \(x=z-a /(3 z) .\) Be sure to determine where the function is one-to-one. $$f(x)=x^{3}+4 x-1$$
The population of a small town was 500 in 2015 and is growing at a rate of 24 people per year. Find and graph the linear population function \(p(t)\) that gives the population of the town \(t\) years after \(2015 .\) Then use this model to predict the population in 2030.
Use the terms domain, range, independent variable, and dependent variable to explain how a function relates one variable to another variable.
Find all the inverses associated with the following functions and state their domains. $$f(x)=2 /\left(x^{2}+2\right)$$
What is the domain of a rational function?
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