Can I use Extension 1 methods in the 2 unit exam? (1 Viewer)

[FLYHAWK14]

What the title says.

 

[tommykins]

回复: Can I use Extension 1 methods in the 2 unit exam?

I don't see why not, unless they outline that you must you a specific method.

I can't see a question where you'd opt 3unit knowledge over 2unit?

Care to provide an example please?

 

[FLYHAWK14]

Re: 回复: Can I use Extension 1 methods in the 2 unit exam?

I don't see why not, unless they outline that you must you a specific method.

I can't see a question where you'd opt 3unit knowledge over 2unit?

Care to provide an example please?

Probably Intergration by Substitution, in some cases.

 

[tommykins]

回复: Re: 回复: Can I use Extension 1 methods in the 2 unit exam?

Probably Intergration by Substitution, in some cases.

TBH i've never witnessed a 2u integral that needs substitution.

Although I have seen some stuff that required 4u knowledge - ie. integrate ln x.

 

[Iruka]

A question like that would generally have some sort of lead in, though.

Like: differentiate xlnx.

They would actually be trying to test if you understand that differentiation and integration are almost inverses of each other.

I think there is no reason why you couldn't use MX1 techniques in 2 unit. But you should be able to do the questions without using them.

 

[tommykins]

回复: Re: Can I use Extension 1 methods in the 2 unit exam?

A question like that would generally have some sort of lead in, though.

Like: differentiate xlnx.

They would actually be trying to test if you understand that differentiation and integration are almost inverses of each other.

I think there is no reason why you couldn't use MX1 techniques in 2 unit. But you should be able to do the questions without using them.

Yeah it would, although the papers I saw did not have lead in questions.

I'd have no idea how to solve it with 2u knowledge.

 

[Just.Snaz]

What the title says.

Yes you can. You can do whatever you want as long as the question doesn't specify.

However, in the HSC, I highly doubt they'll give a question that might advantage the people doing 3 unit over the people doing only 2.

 

[Poad]

Re: 回复: Re: Can I use Extension 1 methods in the 2 unit exam?

Yeah it would, although the papers I saw did not have lead in questions.

I'd have no idea how to solve it with 2u knowledge.

Eh, are you sure? I've never seen anything like it. :\

 

[tommykins]

Re: 回复: Re: Can I use Extension 1 methods in the 2 unit exam?

Eh, are you sure? I've never seen anything like it. :\

It was in my mates half yearly paper, my schools half yearly paper and a few others.

Probably just a one off q.

 

[wendus]

Re: 回复: Re: Can I use Extension 1 methods in the 2 unit exam?

i wouldn't recommend using 3u methods for 2u papers unless you're so so desperate.

and they wouldn't give you a question requiring 3u knowledge in a 2u papers anyway. you should be able to solve all 2u questions using 2u methods.

 

[Aaron.Judd]

Re: 回复: Re: Can I use Extension 1 methods in the 2 unit exam?

Yes, you are permitted to, although there is normally a quicker, easier way to do it using 2 Unit methods.

 

[Iruka]

Re: 回复: Re: Can I use Extension 1 methods in the 2 unit exam?

It was in my mates half yearly paper, my schools half yearly paper and a few others.

Probably just a one off q.

Was it a definite or indefinite integral?

If it was a definite integral, you can work it out by using the fact that exp and log are inverses of each other, so you integrate x=e^y along the y-axis and then subtract this area from the rectangle that you can make using the limits of integration (I hope that made sense, it would be easier to explain with a picture.)

That's about the only way that I can think of using 2-unit techniques.

In some past HSC papers they also use integrals like that to test numerical integration (Simpson's or trapezoidal rule). But of course, in that case, it should be clear from the question what they're asking.

 

[conics2008]

Re: 回复: Re: Can I use Extension 1 methods in the 2 unit exam?

you know u are allowed to and you wont get mark down for it but your just complicating the process of finddin the answer..

you should know for a fact that they are not expecting you to use it.. ill give you an example..

I think this came in the exam in the 3unit one...

it said S from 1 to 0 cos^-1(x)

keep in mind this is inverse.. find the area from 1 to 0

using 3unit knowledge NOT 4unit...

 

[doink]

those 3u questions that want you to find area under lnx usually want you to transfer limits to y axis and use e^x