QUESTION
6.23 Determine the roots of the simultaneous nonlinear equations \[ \begin{array}{l} (x-4)^{2}+(y-4)^{2}=5 \\ x^{2}+y^{2}=16 \end{array} \]
Use a graphical approach to obtain your initial guesses. Determine refined estimates with the two-equation Newton-Raphson method described in Sec. 6.6.2.
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