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Make the symbols consistent, and removed a unnecessary formula |
m Make the symbol consistent |
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| [[Griewank function]]
| [[File:Griewank 2D Contour.svg|200px|Griewank's function]]
| <math>f(\boldsymbol{x})= 1+ \frac {1}{4000} \sum _{i=1}^n x_i^2 -\prod _{i=1}^n P_i(x_i)</math>, where <math>P_i(x_i)=\cos \left( \frac {x_i}{\sqrt {i}} \right)</math>
|<math>f(0, \dots, 0) = 0</math>
|<math>-\infty \le x_{i} \le \infty</math>, <math>1 \le i \le n</math>
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