1.Let AAA be a 3×33 \times 33×3 matrix such that ∣adj(adj(adj A))∣=81|\text{adj}(\text{adj}(\text{adj}\,A))| = 81∣adj(adj(adjA))∣=81. If∑n=1∞∣adj(adj A)∣n∣A∣2n+1(n2+n),\sum_{n=1}^{\infty} \frac{|\text{adj}(\text{adj}\,A)|^{n}}{|A|^{2^{n}+1}(n^{2}+n)},n=1∑∞∣A∣2n+1(n2+n)∣adj(adjA)∣n,then the sum is equal to:a.866866866b.750750750c.820820820d.732732732Login to continueOnly logged in users canattempt or see the solution.
