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Questions  

If z=5+t+i25t2 , (5t5) then locus of z is a curve which passes through

a
5+0i
b
−2+3i
c
2+4i
d
−2−3i

detailed solution

Correct option is C

Let   z =x +iy so that  x=5+t, y=25−t2⇒ (x−5)2+y2=25This clearly passes through  2 + 4i

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