39 Repeat Problem 3.8, but assume that the data type is unsigned. 3.10 Repeat Problem 3.8, but assume that the data type is sigaed. 3.11 Determine whether the following signal assignment is syntactically correct. If not, use the proper conversion function and type casting to correct the problem. library ieee; use ieee.std.logic.1164. all; use ieee.auseric.std. all signal ai, 2, s3, 4, 5, a6, 37 std.logic.vector (3 dowato 0): signal u, u2, u3, u4, u, u6, u7: unsigaed (3 downto 0) signal sg: signed (3 downto 0) u1 <. u7>'1,)