Help me I'm stupid
An arithmetic series has a first term 50 and common difference -3.
(I) after how many terms is the sum of the series less than 50 for the first time?
(II) after how many terms is the sum of the series negative for the first time?
(I) after how many terms is the sum of the series less than 50 for the first time?
(II) after how many terms is the sum of the series negative for the first time?
Original post by subwayislife
An arithmetic series has a first term 50 and common difference -3.
(I) after how many terms is the sum of the series less than 50 for the first time?
(II) after how many terms is the sum of the series negative for the first time?
(I) after how many terms is the sum of the series less than 50 for the first time?
(II) after how many terms is the sum of the series negative for the first time?
Just use your formulae!
1. . Find the minimum value of .
2. . Find the minimum value of .
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