関連ワード:  how to find the first term in geometric progression    how to find the first term in geometric sequence    how to find the first term in geometric series    how to find the missing first term in geometric sequence    how to find first term in geometric sequence with common ratio    how to find first term in geometric sequence without common ratio    how to find the 1st term in a geometric sequence    how to find the first term of an infinite geometric series    first term in geometric sequence  
結果 : how to find the first term in geometric progression