Find Minimum value of $F(z) = 4\left|z-1-2i\right|^2+13\left|z-4-5i\right|^2+12\left|z-2-7i\right|^2+23\left|z-6i\right|^2$
(If any Geometrical solution exist,Then plz explain here.)
Minimum value
jagdish
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Re: Minimum value
Find the modulus of a complex number.