Difference between revisions of "2024 AMC 12A Problems/Problem 13"
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+ | ==Problem== | ||
The graph of <math>y=e^{x+1}+e^{-x}-2</math> has an axis of symmetry. What is the reflection of the point <math>(-1,\tfrac{1}{2})</math> over this axis? | The graph of <math>y=e^{x+1}+e^{-x}-2</math> has an axis of symmetry. What is the reflection of the point <math>(-1,\tfrac{1}{2})</math> over this axis? | ||
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+ | ==See also== | ||
+ | {{AMC12 box|year=2024|ab=A|num-b=12|num-a=14}} | ||
+ | {{MAA Notice}} |
Revision as of 17:49, 8 November 2024
Problem
The graph of has an axis of symmetry. What is the reflection of the point over this axis?
Solution 1
The line of symmetry is probably of the form for some constant . A vertical line of symmetry at for a function exists if and only if ; we substitute and into our given function and see that we must have
for all real . Simplifying:
If , then for all real ; this is clearly impossible, so let . Thus, our line of symmetry is , and reflecting over this line gives
~Technodoggo
See also
2024 AMC 12A (Problems • Answer Key • Resources) | |
Preceded by Problem 12 |
Followed by Problem 14 |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | |
All AMC 12 Problems and Solutions |
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