@vella Active 5 years, 1 months ago Good day,pa$$now i$ really good but can one have friend$ View ActivityProfileFriends 0Groups 0Forums Topics StartedReplies CreatedEngagementsFavorites Search replies: Forum Replies Created Viewing 0 reply threads Author Posts June 2, 2020 at 7:42 am #144182 Ordia-anthony vighoParticipant Alpha=L2-L1/L1(tita2-tita1)-for linear expan$ivity. Author Posts Viewing 0 reply threads