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Algebra of complex numbers

Question

The complex number z, satisfies the condition z25z=24  The maximum distance from the  origin of coordinates to the point  z, is 

Moderate
Solution

We have,   |z|=z+25z25zz+25z+25z

      |z|24+25|z|    |z|224|z|250(|z|25)(|z|+1)0                |z|250                                                       [|z|+1>0]                                       |z|25 or |z0|25

Hence, the maximum distance from the origin of coordinates to

 the point z is 25.



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Let i=1, define a sequence of a complex number by  z1=0,zn+1=zn2+i for n1.In the complex plane,  how far from the origin z111 ?


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