A piece of work can be completed by 45 men in 90 days if only 30 men are available, how many days will it take to complete the s
2 answers:
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Answer:
A represent function because each element of domain maps unique elemen t of range. but inB it has two images.
Answer:
C.
Step-by-step explanation:
Let's find the inverse of each of the given options.
Option A:
To find , replace 'x' with 'y' and 'y' with 'x'. This gives,
Rewrite in terms of 'y'. This gives,
The given function
So, option A is incorrect.
Option B:
To find , replace 'x' with 'y' and 'y' with 'x'. This gives,
Rewrite in terms of 'y'. This gives,
The given function
So, option B is incorrect.
Option C:
To find , replace 'x' with 'y' and 'y' with 'x'. This gives,
Rewrite in terms of 'y'. This gives,
The given function
So, option C is correct.
Option D:
To find , replace 'x' with 'y' and 'y' with 'x'. This gives,
Rewrite in terms of 'y'. This gives,
The given function
So, option D is incorrect.
Therefore, only option C is correct.