Get yourself the Casio fx-991ES that calculator is a beast, and it is allowed in all maths-based exams. It will gain you at least a grade across all your exams, and it isn't expensive really (I picked mine up for Â£15).
The fx-991ES PLUS (I missed the PLUS out in my last comment, and it does make a bit of a difference I guess) has several features not found on the fx-83ES and fx-85GT calculators. They allow for numerical integration, differentiation, summation can solve quite a few forms of equation (quadratics, cubics etc.). It also has the option to calculate in several base-n number systems (namely binary, hexadecimal, decimal (no **** ) and octal. It also has complex number, vector and matrix modes in addition to the standard stat mode. It also has most of (nearly all) the fundamental consants and 40 unit conversions which are damned useful (especially if you study physics, like me!).
Nice, and yeah, in my Further Pure exams it has saved my life more than once by allowing me to get the definite answer - while it doesn't give the method, it at least means the answer is a known value in nearly all cases.
If marks are awarded for method, you still get marks for the answer, which is ALWAYS important. If I could, I would take two calculators in. One for the graphs and complexities, and the other for more basic calculations and in case the battery runs out and they give you one that can't do the work that the upper class calculators do.
Yeah, unfortunately the exam boards have realised that even if students don't know what they're doing, they can get the right answer via their calculator, and it's meant that (at least, it seems to be the case) they are looking more often for exact answers than numerical ones now (the 991ES PLUS can't provide exact answers for things like integrations, so you can only use it for checking).
As for graphs and the like, I haven't needed to mess about with calculators that fancy yet, and the closest I have gotten was a friend's calculator which you could program games on, which was kinda insane, but also definitely banned in the exams I have yet to sit.
Haha, while they may only be capable of games as complex as Pokemon, think about what calculators used to be capable of and it suddenly seems insane how powerful even calculators have become, price vs (absolute) performance of computers is reaching a point where they're just everywhere. One day we'll even be able to speak to our calculators!
I speak to my calculator. It's called Android Voice Recognition. ( **** Apple. I don't support them. Android master race.) It utilizes scientific calculator apps that are linked in, but it's certainly going to become the future. However, voice recognition would never be allowed, because nobody can talk in exams.
By the time it's in, I wouldn't have to worry about that! Unless it is working solidly in the next 4 years, I shouldn't have to sit another exam again (I really hope). What app do you use? I have a Nexus 5 so I should be down with that sorta thing, but when looking on the app store, the most powerful scientific calculators supported seemed oddly none-functional compared to actual calculators.
It's a homebrew program that a friend put on my phone. I don't know how he does it, but it's pretty shaky atm and is hard to operate at times because there are holes in the coding. If he releases it onto the app store, I'll tell you which one it is.
Hey bitch, I have that calculator, and it's ability to display numbers as fractions is a ******* god send. Press the S<=>D button, and try not to **** your pants when you get a question that asks for an exact answer.
3900 is not prime. Its even, so divisible by 2. Also, it ends in 0, so its divisible by multiples of ten. Also, divisible by 5. also 3, and 6. Just to name a few.
The reason it shows the fraction as an answer, is because that is the most precise answer you can get since the result in irrational, if you have it read up the decimal answer, it will never be completely correct, unless your calculator can show and calculate an infinite ammount of digits.
year of the Cock
lucky me