1) , because .
2) , because
3) , because
4) , because
5) , because
6)
Range of is , so answer is incorrect.
7)
Range of is , so answer is correct.
8)
Range of is , so answer is incorrect.
9)
Range of is , so answer is correct.
10)
Range of is , so answer is incorrect.
11)
Range of is , so answer is correct.
12)
Range of is , so answer is correct.
13)
Range of is , so answer is incorrect.
14)
Range of is , so answer is incorrect.
15)
Swap and :
Solve for :
16)
Swap and :
Solve for :
17)
Swap and :
Solve for :
18)
Swap and :
Solve for :
19)
Swap and :
Solve for :
20)
Swap and :
Solve for :
21)
Swap and :
Solve for :
22)
Domain of is .
Range of is (since )
Domain of is range of : .
23)
Domain of is .
Range of is (since )
Domain of is range of : .
24)
Domain of is .
Range of is (since )
Domain of is range of : .
25)
Domain of is .
Range of is (since )
Domain of is range of : .
26)
Domain of is .
Range of is .
Domain of is range of : .
27)
Domain of is .
Range of is (since )
Domain of is range of : .
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46)
Let , then we need to find .
We have that .
According to Pythagorean identity , equation can be rewritten as
We took square root with positive sign because and have same sign on .
47)
Let , then we need to find .
We have that .
According to Pythagorean identity , equation can be rewritten as
We took square root with positive sign because is positive on .
48)
Let , then we need to find .
We have that .
According to Pythagorean identity , equation can be rewritten as
49)
Let , then we need to find .
We have that .
According to Pythagorean identity , equation can be...