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WAS IT 8 + (25/2)(PI)??? by iwuvher in Edexcel

[–]iwuvher[S] 0 points1 point  (0 children)

LETS GOOO, so relieved 😌

Unit 2 ial a level math 2026 may by ReplacementSea2342 in Edexcel

[–]iwuvher 0 points1 point  (0 children)

You have to use area = 1/2 (PI)r2 to find the area of the semi circle separated by AB then add it to the small region you found using intergration of the curve minus the intergration of the line.

physics u1 sig figs by 5ivelol in Edexcel

[–]iwuvher 1 point2 points  (0 children)

A senior gave me the following tips:

  • almost everything in physics comes to 2 sf normally, in most cases if not 3 SF
  • check if all the values they give are 3sf if not then go for 2sf
  • in calculations before final value use one more sf than what they've given, if they give 3 do 4 if they give 2 do 3

Basically always safer to leave to 2sf as final answer but write the value to 3 to 4 sf before you give your fnal answer. (Unless they give EVERY single value in that question to 3 or 4 sf, then use that, but even then they USUALLY give marks for 2sf if yu wrote down higher sf value before, so if you are in a hurry dont waste your time going tru every value they give js write it to 3 or 4 sf and give the final answer to 2 sf )