b. symmetric difference the list of members of one but not both equally of the provided sets. Typically symbolized: A + B : staying or involving a point out of make a difference dependent upon temperature thermal agitation of molecular construction Lots of individuals mix up “difference” and “diference.” https://thermal-cycling-profile-r57123.suomiblog.com/how-mpi-thermal-air-dryer-modules-can-save-you-time-stress-and-money-51368809