HELLP ME ON THIS QUESTION OF MATHS PLSSSSS

[DEGO]

A PARTICLE MOVES ALONG A LINE
for> the distance of particle from O at time T is X meters   WHERE
x=20/t

find an expression for the acceleration of the particle
 i cant understand how its answered in MS

[astarmathsandphysics]

Write it as and diffentiatte

[DEGO]

how did the 20 change to  - 20  XD (some times i get mind block)

[holtadit]

Dude this isnt IGCSE man !!

This is like A-Level

[DEGO]

i got it THX  (the first hard question i meat in edexel maths)

[Amr Fouad]

this is not IGCSE..it's A-L

[DEGO]

i solved it in olvl maths edexel

[astarmathsandphysics]

I edited my post above
When you differentiate Multiply by the power then take 1 from the power

[halosh92]

A PARTICLE MOVES ALONG A LINE
for> the distance of particle from O at time T is X meters   WHERE
x=20/t

find an expression for the acceleration of the particle
 i cant understand how its answered in MS

is this AS or Alevel which paper is it from?

[DEGO]

i found it paper 4h edexel i am olvl  idk if its Al cambridge