4. Evaluate the limit analytically, using L'Hopital's Rule if necessary. 2x2 +13x +20 lim x-+-4 x +4 5. Evaluate the limit analytically, using L'Hopital's Rule if necessary. In x lim x-1 sin (x) 6. Evaluate the limit analytically, using L'Hopital's Rule if necessary. 3 2 lim x-+1' In x x-1