Contents

Img (2+3i) is……………..
a)2-3i      
b) 2         
c) 3        
d) none

c

Z1 = Z1 is.................property
a)reflexive                           
b) symmetric      
c) transitive                           
d) none of these

a

If Z1 =Z2, then Z2 = Z1 is......property
a)reflexive                             
b) symmetric      
c) transitive                           
d) none of these

b

If Z1=Z2 and Z2 =Z3 then Z1=Z3 is……… property
a)reflexive                             
b) symmetric      
c) transitive                          
d) none of these

c

If Z1= a+bi and Z2 = c+di then their addition is given by……….
a)(a+c)+(b+d)i       
b)(ac-bd)+(ad+bc)i                       
c) (a-c)+(b-d)i       
d) [(ac+bd)/c2+d2] + [(bc-ad)/(c2+d2)]i

a

If Z1= a+bi and Z2 = c+di then their subtraction is given by
a)(a+c)+(b+d)i       
b)(ac-bd)+(ad+bc)i                                                      
c)(a-c)+(b-d)i  
d) [(ac+bd)/c2+d2] + [(bc-ad)/(c2+d2)]i

c