Talk:Griewank function

Why have all the images been removed? If no one minds, I would like to create a page similar to Shekel function with a minimal description and some nice picture in preparation for inclusion in Test_functions_for_optimization.

Dear User:Gisling Is there a reason to keep the page in exactly the previous shape? When talking about a function, I expect to read at least some function definition for example.

Siko1056 (talk) 00:27, 26 December 2016 (UTC)