gunnerfan99
New Member
- Joined
- Oct 26, 2019
- Messages
- 7
- Gender
- Male
- HSC
- 2019
I know 3 that did thatanyone else accidentally get an inverse tan integral for the u=(cosx)^2 by subbing u^2 lol
I know 3 that did thatanyone else accidentally get an inverse tan integral for the u=(cosx)^2 by subbing u^2 lol
ahh i think I know what you mean. But it was given that x1 = k, and x2 = k+1/k^2, so x2> x1The change of sign alone doesn’t tell you which way around the inequality is. You need to know the behaviour of the function in that domain to be able make that conclusion. You are slightly saved by the fact that x2 can be explictly shown to be greater than x1 in the particular example.
BAHAHAHHA YES, that was one of the silly mistakes I made in this exam :') kmsanyone else accidentally get an inverse tan integral for the u=(cosx)^2 by subbing u^2 lol
yes ... im deceasedanyone else accidentally get an inverse tan integral for the u=(cosx)^2 by subbing u^2 lol
you reckon they will only take a mark off??anyone else accidentally get an inverse tan integral for the u=(cosx)^2 by subbing u^2 lol
i agree but i still think f(x) is continuous is important because if it isn't continuous, there doesn't have to be a root between x2 and x1You don't need to say that the function is continuous and increasing in the given domain. The question stated that K was a positive integer with x1. Since x2 is K+(1/K^2), the x2 must be greater than x1 since (1/K^2)>0. From this, it can be deduced that the root alpha must lie between x2 and x1 (with given proof of course).
No way it'll be below 70/70. Even then, I don't think full marks will be enough. You'd need a really good 2u/4u mark aswell.hey lads what do we reckon the raw mark needs to be for a state rank?
They take your other subject marks into account??!!No way it'll be below 70/70. Even then, I don't think full marks will be enough. You'd need a really good 2u/4u mark aswell.
well 4u doubles ur 3u mark but i've not clue how everything worksThey take your other subject marks into account??!!
Yeah to even out ties iirc. Like if 3 people tie on 100 RAW but one of them got 99 in 4u and the others got like 95, then the person who got 99 in 4u will get the higher rank.They take your other subject marks into account??!!
Only if there are ties. But in 3u, I'm fairly sure it is usually a tie between like 20/30 people for 100. So generally, they do need to look at 2u/4u marks.They take your other subject marks into account??!!
Nah we’ll prob get 1/3 for it ://you reckon they will only take a mark off??