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**Kryptonis****Member**- Registered: 2011-03-03
- Posts: 11

Could use a hint on how to begin this problem:

∫cos^-1 (x) dx

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,548

hi Kryptonis,

Substitution should get you going on this one too.

Try y = arccos x.

Post again if you need more details.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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