Solution
Related Formula
Analyze structural equations through modular constraints (e.g., modulo 3 or 4) to limit potential bounds.
Core Logic
Given the equation: x² - 2^y = 2023. Let us inspect the numbers modulo 8:
2023 ≡ 7 8A perfect square x² can only be congruent to 0, 1, 4 8.
- If y ≥ 3, then 2^y ≡ 0 8 x² ≡ 7 8, which is impossible.
Therefore, y must be less than 3. Since y in N, the only choices are y = 1 or y = 2.
Step 1: Testing Small Exponent Valuations
- Case 1: y = 1
This gives a valid natural solution pair: (45, 1).
- Case 2: y = 2
Since 2027 is not a perfect square, this yields no natural solutions.
Thus, the only valid point element inside set C is (45, 1).
Step 2: Sum Evaluation
Evaluating the required target accumulation:
Σ (x + y) = 45 + 1 = 46Pattern Recognition
Exponential Diophantine equations (equations with variables in exponents) are best analyzed using modular arithmetic constraints to quickly find small finite upper bounds.
Chapter Mix
Class 11 Mathematics: Principle of Mathematical Induction / Number Theory