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View Full Version : (cosx)^3 (sinx)^3 =racine2/2

sbiry
Dec 30, 2012, 03:03 PM
Pease Help me

I have to resove

(cosx)^3 (sinx)^3 =racine2/2

Thanks.
sbiry
Dec 30, 2012, 03:07 PM
Im sorry

I need

(cosx)^3+(sinx)^3 =racine2/2