23. limn→∞2n+1+3n−1(−2)n+3n\displaystyle\lim_{n\to\infty}\frac{2^{n+1}+3^{n-1}}{(-2)^n+3^n}n→∞lim(−2)n+3n2n+1+3n−1의 값은? [2점]