Let the function be defined by
Then the number of solutions of in is ____.
Then the number of solutions of in is ____.
Answer: 1
Solution
Factor the function:
Since for all , and for all , and , the function if and only if:
Let . Then:
Since is strictly increasing and continuous, it crosses zero exactly once. Therefore, has exactly 1 solution.
Since for all , and for all , and , the function if and only if:
Let . Then:
Since is strictly increasing and continuous, it crosses zero exactly once. Therefore, has exactly 1 solution.
JEE Advanced · 2024 · 26 May 2024 · Paper 2 · Integer answer