Help urgent maths

Help I don’t get how to do part B
At all…
I’m so scared for my exams as I’m forgetting stuff (panicking)
Plz help me

I don’t get the ms, I wrote out the mark scheme on the paper so it’s easier to see

(edited 11 months ago)

Original post by Alevelhelp.1

Help I don’t get how to do part B
At all…
I’m so scared for my exams as I’m forgetting stuff (panicking)
Plz help me

I don’t get the ms, I wrote out the mark scheme on the paper so it’s easier to see

For a geometric sequence to converge, |r| < 1.
Then, rearrange to make it clearer!
And you know what a is in terms of r, from above.

Does that help?

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