Problem 4: Find the pointwise limits of functional sequences. Is the convergence uniform? If not, find intervals of uniform convergence. ( 2 2 ) n a ) an ( 2 ) = 1 + (x2 ) n' b) an (2) = (2 sin ac) " Problem 5: Find the pointwise limits of functional sequences. Is the convergence uniform? If not, find intervals of uniform convergence. nx a ) an ( 2 ) = 1 + n 2 2 2 ' b) an(x) = nxexp( -na?)