Year 12s: what will be the first way you research your future options? >>

Intergral sub

struggling to show the (1+t^-2)/2 part, I've tried showing it directly and also tried showing it from the RHS but can't seem to factorise into anything useful Screenshot 2022-06-25 at 16.49.11.png

(edited 1 year ago)

Reply 1

RandomE

Original post by Student 999

struggling to show the (1+t^-2)/2 part, I've tried showing it directly and also tried showing it from the RHS but can't seem to factorise into anything useful Screenshot 2022-06-25 at 16.49.11.png

I’d say let the x^2+1=t instead of the full thing, if you want me to follow that through to see if i get anywhere let me know.

Reply 2

Student 999

Original post by RandomE

I’d say let the x^2+1=t instead of the full thing, if you want me to follow that through to see if i get anywhere let me know.

Don't think that'll work since you want the f(t) group aswell

Reply 3

Student 999

I've managed to show it now but would there have been a shorter way about it?

(edited 1 year ago)

Reply 4

Student 999

For the second part I could directly just do my substitution from part a and get the answer, what I did is referenced part a to save time but my explanation on how they're linked feels mathematically weak?