Functions : Range of a function
Question 2
The range of the function
is
- [1,
)
- (1, ]
- [1, ]
- [0, 3]
Correct Answer is (1,
]. Choice (2)
Explanatory Answer
The expression can also be written as 1 +
or 1 +
.
The lower bound of this expression is 1, while the upper bound is reached when x = -2.
The expression will always be greater than 1, so the lower bound is non-inclusive.
The upper bound of
can be reached when x = -2.
The correct range is (1,
], or choice (2).
AIEEE Math Problems, Practice Questions and Answers : Listed Topicwise
1 month intensive classes for AIEEE @ Chennai starts in March 2011. At Anna Nagar, Mylapore and Tambaram. 
Add to del.icio.us
Stumble It
digg this