Thanks for making a level maths easier... although if i did the mental maths it would have gone wrong from the very beginning

These videos are awesome.

Could you go through modelling with logs please

thank you so much ! - good recap

Thanks

Hi sir, could you please solve the tricky question below as well. The first three terms of a geometric series are (p) , (p^2) , (p^2 +4) (a) Show that the only possible real value of p is 2.

@tshah0819

Ай бұрын

Since it's a geometric the ratio r = p²/p = p²+4/ p² Then cross multiply and rearrange to get p⁴-p³-4p= 0 p(p³-p²-4) =0 then Let f(x) = p³ -p²-4 then by factor theorem f(2) =0 so (p-2) is a factor then perform long division to find the quadratic quotient u will then end up with p(p-2)(p²+p+2) =0 since it's a geometric p cannot equal 0 and the the quadratic has a discriminant of less than 0 so it has no real values of p (or u can use ur calculator) so the only value of p is 2

Great video. This question isn't really all that tricky it just takes a long time to do, but all the ideas used in this question are either GCSE level or you can copy straight off the formula book.

Where is this question from? Is it from Cambridge as level maths?

First.

@MrAstburyMaths

Ай бұрын

Bosh!

Which club links these three players: -Blaise Matuidi -Florentin Pogba -Pierre Emerick Aubameyang

@joshuajones7700

Ай бұрын

Saint-Ettiene