In practice, this exercise may call for knowledges in various fields: linear algebra, factorization of integers, derivatives, roots right up to knowledges in algebraic geometry.:

This exercise accepts several option parameters which change the style and the level of difficulty. This level of difficulty varies from very easy even for a novice, up to very hard even for a professional mathematician.You may go to the exercise with a simple choice of the level of difficulty: 1 ( very easy) , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ( a real challenge)

If you are expert, you can choose these parameters one by one.Please take note that WIMS pages are interactively generated; they are not ordinary HTML files. They must be used interactively ONLINE. It is useless for you to gather them through a robot program.

- Description: decompose a composed function. This is the main site of WIMS (WWW Interactive Multipurpose Server): interactive exercises, online calculators and plotters, mathematical recreation and games
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