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Q.

For a, let A={z:Re(a+z¯)>Im(a¯+z)} and B={z:Re(a+z¯)<Im(a¯+z)}. Then among the two statements:
(S1) : If Re(a),Im(a)>0 , then the set   contains all the real numbers
(S2) : If  Re(a),Im(a)<0, then the set B contains all the real numbers, 
 

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a

both are false

b

both are true

c

only (S2) is true

d

only (S1) is true

answer is A.

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Detailed Solution

detailed_solution_thumbnail

Let a=a1+ia2,z=x+iyA={x+iy:Re(a+z¯)>Im(a¯+z)}

a1+x>-a2+y
a1+a2>yx  SI:a1>0,a2>0,

for all real numbers, y = 0
x<a1+a2 is not true for all real x, for given a1,a2 
SI is false 

a1+x<-a2+y

a1+a2<yx 
Similarly a1<0,a2<0, x>a1+a2,

for all real x is also not true
SII is false

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