Friendly reminder ... to avoid grade damage:

A Hat (^) above a variable
e.g., Ê means



 #####   ######  #####    ####   ######  #    #   #####
 #    #  #       #    #  #    #  #       ##   #     #
 #    #  #####   #    #  #       #####   # #  #     #
 #####   #       #####   #       #       #  # #     #
 #       #       #   #   #    #  #       #   ##     #
 #       ######  #    #   ####   ######  #    #     #     change

Ê is N-O-T!!!!!!!!!! ΔE