The sum of 3 consecutive integers is 48. What is the smallest of the integers?
1 answer:
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Given the function
The inverse of the function is calculated by changing f(x) to y and making x the subject of the formula as follows:
We now change back the variables to get the function in the form of inverse function as follows:
Comparing this with Talib's work, we can see that he is correct except for the last line where he did not change the variable y back to x.
Therefore, the last line of his work made his inverse not to be correct.
The inverse of the function is calculated by changing f(x) to y and making x the subject of the formula as follows:
We now change back the variables to get the function in the form of inverse function as follows:
Comparing this with Talib's work, we can see that he is correct except for the last line where he did not change the variable y back to x.
Therefore, the last line of his work made his inverse not to be correct.