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13. Complex Numbers
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Q23 of 153 Page 13

Solve the equation |z| = z + 1 + 2i.

Given:


⇒ |z|=z+1+2i


Let us assume z=x+iy


⇒ |x+iy|=x+iy+1+2i


⇒


Equating Real and Imaginary parts on both sides we get


⇒ y+2=0


⇒ y=-2-----------------------(1)


⇒


⇒ x2+(-2)2=(x+1)2


⇒ x2+4=x2+2x+1


⇒ 2x=3


⇒


∴ .


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If z1 is a complex number other than -1 such that |z1| = 1 and then show that the real parts of z2 is zero.

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If |z + 1| = z + 2(1 + i), find z.

24

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If z1, z2, z3 are complex numbers such that then find the value of |z1 + z2 + z3|.

Questions · 153
13. Complex Numbers
1 2 3 3 3 3 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 3 3 3 3 3 3 4 4 4 4 5 6 7 8 9 10 11 12 13 14 15 16 16 16 16 16 17 18 19 20 21 22 23 24 25 26 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 3 3 3 3 4 5 6 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
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