Free Practice Question
PS · Problem Solving
705-805
Functions
If , what is the value of ?
Answer Choices
Correct answer marked belowA
-5
B
-3
C
1
3
Correct
E
5
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Explanation
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Official Explanation
Official
At : — (1)
At : — (2)
Add equations (1) and (2):
…
At : — (2)
Add equations (1) and (2):
…
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What it tests
Your ability to evaluate and compose functions, including unusual defined operations.
Common trap
Applying function operations in the wrong order or ignoring domain restrictions.
Details
Difficulty
705-805
Type
PS
Category