F( x+ T 2 )=−F(x) MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaiqaciWacmGadaGadeaabaGaaqaaaOqaaiaadAeadaqadaqaaiaadIhacqGHRaWkdaWcaaqaaiaadsfaaeaacaaIYaaaaaGaayjkaiaawMcaaiabg2da9iabgkHiTiaadAeacaGGOaGaamiEaiaacMcaaaa@403B@ , where T is the period