Problem

The formula $ C = \frac{5}{9} (F - 32) $ , where …

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Problem 18 Medium Difficulty

The graph of $ f $ is given.
(a) Why is $ f $ one-to-one?
(b) What are the domain and range of $ f^{-1} $ ?
(c) What is the value of $ f^{-1} (2) $?
(d) Estimate the value of $ f^{-1} (0) $.

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Video Transcript

all right. So here we have a rough sketch of the graph of F, and it's 1 to 1 because every X value has only one y value and every y value has only one X value. And graphically, we can say it passes the horizontal line test as well as a vertical line test. Okay, now we went to find the domain and range of F inverse. So first of all, let's find the domain and range of F. So the domain of F the X values that goes through our negative 3 to 3 on the range of death, the Y values that goes through our negative 123 So the domain of F inverse will be the range of F, and the range of FM burst will be the domain of F. So we're going to switch these and the domain of F inverse will be from negative 123 and the range will be from negative 3 to 3. When you have an inverse outputs become inputs, inputs become outputs. All right. Now let's find the value of f inverse of to so effin versus to let's say it equals X, then that means that f of X equals two, the output of X inverse will be the inverse will be the input of F inputs and outputs are switched. So what? X value appears to have a Y value of two. Looking at the graph, it looks like X equals zero has a Y value of two. So f inverse of two is zero. And finally, let's estimate the value of F inverse of zero. So similarly, let's just say that it's X, so that means that f of X equals zero. So we're estimating the value of the point where there's a wide coordinate of zero on the graph. Now you really should look at the graph in the book, not my graph, because mine is just a rough sketch. And if you look at the graph in the book, you see that it passes through a height of zero at about negative 1.5 negative 1.6 somewhere in there, so f inverse of zero is approximately negative. 1.6

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The formula $ C = \frac{5}{9} (F - 32) $ , where …

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James Stewart

Calculus: Early Transcendentals

Catherine Ross

Anna Marie Vagnozzi

Caleb Elmore

Kristen Karbon

This textbook answer is only visible when subscribed! Please subscribe to view the answer

Calculus: Early Transcendentals

Catherine Ross

Anna Marie Vagnozzi

Caleb Elmore

Kristen Karbon

James StewartCalculus: Early Transcendentals

Catherine Ross

Anna Marie Vagnozzi

Caleb Elmore

Kristen Karbon

James Stewart

Calculus: Early Transcendentals