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Hmmm i see what you’re saying. what does the angle have to do in this question. Which formula links greatest wavelength and energy with the angle ?? Also is this a general result. Based on the formula, will the transition from 3 —> 2 always be the result with the greatest energy transition. If...

yeah, how’d you get it?

thank you very much!

yes pls !

In this question, I found the two possibles values of mu, but was confused why they disregarded -44/65 as being invalid? I swear it works, since there are no resrictions on mu Any help would be appreciated/

Thank you very much, that makes sense!

hmm can you show full working please?

Ohhhh right since 2/1+t^2 can never = 0

How is the solution to this question found, particularly this part?

If it's always positive, why didn't they mention that y cant equal to all negative values, but only mention y can't equal to -1?

Can someone please explain why in the solution to this question, there is a restriction of y can't equal to 1 please?

What about this one, what's the process for determining partial fractions when the degree of the numerator is greater than or equal to denominator. Where did this A come from?

Thanks so much for this !!

hmm how would you approach it then?

Thank you so much for all your help! It makes sense now

And how did they let LHS = RHS from in this case? Where did the A/x come from, and on the x^2 term, should it be Bx + c

Oh yeah, i figured out the first one, but I don't know how to do b and c specifically. Would you be able to shown one of them please?

Can someone please show their working for these types of partial fractions q's where the numerator has a higher degree than the numerator. I'm so lost and the Cambridge method isn't clear to me. Is there a faster way than long division?

Thank you so much for your help!!

Can someone please show me their working for these two q’s. for 26c only (ii). I worked on it for so long and can’t figure out the solutions