3. Find the sum of the series [show step by step solutions]. as on k bl {a} {5 P135!) E {EL1) {b} {5 Pth} E (725 Lin) 4. Find the radius and interval of ounvergenue for the series [show step by step solutions}. 2u+1.[n+1j (a; [1:] p13) 2 M3232 {b} {10 ms.) 2 EL Til-=0 n=1 5. Determine whether the given series converge er diverge [shew step by step solutions}. (a) {lm} Elm (h) {a rats.) is (c) {5pm.} Eg)