関連ワード:  how to find the first term in a geometric series    how to find the first term in a geometric sequence    how to find the first term of a geometric sequence without common ratio    how to get the first term in geometric sequence    how to find the first term of an infinite 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 the first term in a geometric sequence when given two terms    how to find the first 5 terms of a geometric sequence    how to find the first n terms of a geometric sequence  
結果 : how to find the first term in a geometric series