can the general term formula be used for binomial theorem in ext 1? (1 Viewer)

[anonymoushehe]

it doesnt say it explicitly in the syllabus, but are we allowed to use it in exams?

 

[cossine]

it doesnt say it explicitly in the syllabus, but are we allowed to use it in exams?

What is the general term formula? Are you considering the case of finding the coeffcient of some term in the expresssion (a+b+c)^n?

 

[anonymoushehe]

this one:

 

[cossine]

this one: View attachment 48242

So the binomial theorem incorporates the concept of general term formula so in order words you can use it.

 

[coolcat6778]

it doesnt say it explicitly in the syllabus, but are we allowed to use it in exams?

yeah, i really hate how the syllabus is written by a bunch of retarded gremlins that don't know what they are doing.

 

[anonymoushehe]

So the binomial theorem incorporates the concept of general term formula so in order words you can use it.

oh okay, but do we need to prove it or smth in the exam? i thought the rule was like if the eqn isnt on the eqn sheet then you need to derive it?

 

[Average Boreduser]

oh okay, but do we need to prove it or smth in the exam? i thought the rule was like if the eqn isnt on the eqn sheet then you need to derive it?

no u dont need to derive

 

[coolcat6778]

That is such a retarded rule, they need to give us 3 hours of working time then if we were to derive everything we use that's not on the formula sheet. sin2A = 2sinAcosA is not on the formula sheet, do we have to derive that?

 

[jane1820]

this one: View attachment 48242

when we were doing binomials in term 1 that was the form our teacher told us to use when asked to find an term from the original expansion so yh obviously its allowed in the hsc

 

[Sethio]

just in general look through a hsc sample answer and trial answers. in this case it’s trivial but that’s what you should do if your unsure of any assumptions in your working. On these I generally just write summation notation, so basically throw a sigma at the front, and then go and set the index r as the question requires.

in a test if it’s not and obvious idea, just look at mark allocation, and think of the proof associated, if either one is unreasonable just scrap the proof and quote it. But otherwise if it’s simple and your totally unsure, it’s sort of a better to have it and not need it than need it and not have it situation, so safest bets is write something of relevance before quoting.

 

[coolcat6778]

just in general look through a hsc sample answer and trial answers. in this case it’s trivial but that’s what you should do if your unsure of any assumptions in your working. On these I generally just write summation notation, so basically throw a sigma at the front, and then go and set the index r as the question requires.

in a test if it’s not and obvious idea, just look at mark allocation, and think of the proof associated, if either one is unreasonable just scrap the proof and quote it. But otherwise if it’s simple and your totally unsure, it’s sort of a better to have it and not need it than need it and not have it situation, so safest bets is write something of relevance before quoting.

general term is a well known formula just like sin2A = 2sinAcosA (also not in formula sheet). I don't believe the hsc markers of math papers are retarded unlike science markers. Hence you should be fine to use the general term formula.