(2) (a) Give the computational representation of integer numbers a=231 and b=1201342. (b) Write the normal form of 0.0000772 and 32.6 and give their computational representations. (3) (a) Convert the binary numbers (11001)2 and (101010)2 to decimal numbers. (b) Convert decimal numbers (73)10 and (34)10 to binary numbers. (4) When a lens is used to form an image of some object, the focal length f is equal to f=u+vuv, where u is the distance from the object to the lens and v is the distance from the lens to the image. Suppose u and v are approximated as u=1 and v=2 and (u)=(v)=0.1. Find (f)