Heeran Ravindran's answer to Koyuki Sky's Secondary 4 E Maths Singapore question.
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Hi! This is a geometric progression (GP). Meaning, the next term is a constant multiple of the previous term. In this question, that multiple is 1/2.
The general formula for a GP is ar^n-1, where a is the first term and r is the multiple.
So in this case the formula is 1054(0.5)^n-1, as seen in the answer to part (ii).
Just remember this formula can only work if the multiple is constant.
I hope this helped! Happy studying! :D
The general formula for a GP is ar^n-1, where a is the first term and r is the multiple.
So in this case the formula is 1054(0.5)^n-1, as seen in the answer to part (ii).
Just remember this formula can only work if the multiple is constant.
I hope this helped! Happy studying! :D
Date Posted:
3 years ago
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