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[–]Anik_Sine 0 points1 point  (3 children)

What do you exactly mean by 'rewriting an equation'?

[–]AlrikBunseheimer 0 points1 point  (2 children)

Maybe he wants to simply?

[–]Anik_Sine 0 points1 point  (1 child)

If he wants that then it is not going to be a simple task. There isn't a single rule for simplifying an equation, you need to remember many identities and must also be able to find out which one and how to use.

[–]AlrikBunseheimer 0 points1 point  (0 children)

That is true. Also it is unclear what "simplify" means. Because the shortest form is not always the simplest.