1)\quad c)\quad ^^20if^^20\quad (a+jb)^{1/2}=x+jy ^^20To^^20show^^20^^2d^^20(a-jb)^{1/2}=x-jy^^20.^^20 a s-(a+j b)^{1 / 2}=(x+j y) \Rightarrow \quad(a+j b)=(x+j y)^{2}=\left(x^{2}-y^{2}+2 x y j\right. (a-j b)=\left(x^{2}-y^{2}\right)-2 x y j (a-j b)=(x-j y)^{2} \Rightarrow(a-j b)^{1 / 2}=(x-i
y) Taking conjugate to the both sides -