For qn 12 part 1 how to derive the 2nd step frm the first step? Thx

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junior college 1 H2 Maths

For qn 12 part 1 how to derive the 2nd step frm the first step? Thx

Date Posted: 7 years ago

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Date Posted: 7 years ago

Han Xu Guang

7 years ago

please ignore the formula with the star. i think its wrong

Han Xu Guang

7 years ago

it should be ar^(n-1), not ar^n. my mistake.