Quadratic Sequences

[delicate loom]

Why does he divide by 2 each time? <@&791435371564892232> ( sorry didn’t want to keep asking Andy to much if he was busy )

Quadratic Sequences

[wild heath]

Wdym divide by 2

[delicate loom]

When he is dividing by 2

On the sequence

[wild heath]

Oh okay nvm I got it

So think about square numbers yeah

[delicate loom]

Yh

[wild heath]

So 1,4,9,16,25….

[delicate loom]

Yep

[wild heath]

What is the difference between each number

[delicate loom]

Square numbers or the sequences?

[wild heath]

The square numbers I have provided above

[delicate loom]

3,5,7,9

[wild heath]

And what’s the difference between each of those numbers

[delicate loom]

2

[wild heath]

And I’ve given you the sequence of n^2

[delicate loom]

But why is he dividing by 2?

[wild heath]

Because we’ve just proven it’s the case for n^2 (any square number), so he’s applying that to the sequence to get the n^2 term

[delicate loom]

Thanks

[delicate loom]

@rough agate @wild heath

How does this work because

If you continued square numbers x 3

U would get 48

Which is right bc that -5 is 43

But then 27 x 3 = 81

And 81 - 5 isn’t 70?

[wild heath]

27 isn’t a square number

[delicate loom]

9x3

Bc he x them all by 3

Cause it’s 3n^2

[wild heath]

3(5^2)-5=70

[delicate loom]

Oh bc the way he is doing it to see the pattern of -5 is

X the square numbers by 3

Then seeing what to - to get back to original

OH

OH

NVM SORRY