 #1
 43
 0
Dear members,
see attached pdf file.Can you help me to prove this formulas.
Thank you
Belgium 12
This is not homework.I'm 68 and retired.
see attached pdf file.Can you help me to prove this formulas.
Thank you
Belgium 12
This is not homework.I'm 68 and retired.
Attachments

322.2 KB Views: 143