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Example Questions
Example Question #1 : Differentiating Functions
Which expression correctly identifies the inverse of ?
The inverse of a function can be found by substituting yvariables for the variables found in the function, then setting the function equal to . By next isolating , the inverse function is written. Then, the notation is used to describe the newly written function as being the inverse of the original function. The answer choice “ ” is correct.
Example Question #2 : Differentiating Functions
Which of the following correctly identifies the derivative of an inverse function?
This question asks you to recognize the correct notation of a differentiating inverse functions problem. First, it is key to recognize that the equation needs to have the same variable throughout, thus eliminating the answer choices and . Next, there should be no constants in the correct equation; thus, is incorrect. The correct choice is .
Example Question #3 : Differentiating Functions
Find given .
Let
It is important to recognize the relationship between a function and its inverse to solve.
If
, solving for the inverse function will produce .To find the derivative of an inverse function, use:
Therefore,
Example Question #2 : Differentiating Functions
Let .Find .
To find the derivative of the inverse of
, it is useful to first solve for .This will help because
is needed in the derivative equation, .
Next, the equation for the derivative of an inverse function can be evaluated.
After substituting in
for , the derivative of or , is applied:
Therefore, the correct answer is
Example Question #3 : Differentiating Functions
Let . Find .
To find the derivative of the inverse of
, it is useful to first solve for .This will help because
is needed in the derivative equation, .
Next, the equation for the derivative of an inverse function can be evaluated.
After substituting in
, the derivative of , or , is applied:
Therefore, the correct answer is
Example Question #6 : Differentiating Functions
Let . Find .
To find the derivative of the inverse of
, it is useful to first solve for .This will help because
is needed in the derivative equation, .
Next, the equation for the derivative of an inverse function can be evaluated.
After substituting in
for , the derivative of , or , is applied:
Therefore, the correct answer is .
Example Question #4 : Differentiating Functions
Let . Find .
To find the derivative of the inverse of
, it is useful to first solve for .This will help because
is needed in the derivative equation, .
Next, the equation for the derivative of an inverse function can be evaluated.
After substituting in
for , the derivative of , or , is applied:
Therefore, the correct answer is .
Example Question #5 : Differentiating Functions
Let . Find .
To find the derivative of the inverse of
, it is useful to first solve for .This will help because
is needed in the derivative equation, .
Next, the equation for the derivative of an inverse function can be evaluated.
After substituting in
for , the derivative of , or , is applied:
Therefore, the correct answer is
Example Question #1 : Differentiate Inverse Functions
Suppose the points in the table below represent the continuous function . The differentiable function is the inverse of the function . Find .
Below is the equation for the derivative of
:
So, the value of
must first be found.Using the data from the table,
since .Next, from the table the following can be obtained:
Now, the appropriate substitutions can be made to solve for
.
Example Question #10 : Differentiating Functions
Find given .
To find the derivative of the inverse of
, it is useful to first solve for .This will help because
is needed in the derivative equation, .
Next, the equation for the derivative of an inverse function can be evaluated.
After substituting in
for , the derivative of , or , is found by taking the derivative of and applying chain rule.
After finding the general term
, evaluate at .
Therefore, the correct answer is .
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