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Matched Problem 1: Find the domain of
function f defined by
f (x) = -1 / ( x + 3)
Answer:
The domain of function f is the set of all values of x in the interval
(-infinity , -3) U (-3 , +infinity)
Matched Problem 2: Find the domain of function f defined by:
f (x) = sqrt (-x + 9)
Answer:
The domain of function f is the set of all values of x in the interval
(-infinity , 9 ]
Matched Problem 3: Find the domain of function f defined by:
f (x) = sqrt( -x + 2) / [(x + 1)(x + 9)]
Answer:
The domain of function f is the set of all values of x in the interval
(-infinity , -9) U (-9 , -1) U (-1 , 2]
Matched Problem 4: Find the range of
function f defined by:
f (x) = x 2 + 3
Answer:
The range of function f is the set of all values of f(x) in the interval
[3 , +infinity)
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