Go to first unread
Back
to top
Which graphic calculator?
Watch this thread
Chlorophile
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#1
My teachers suggested that we get graphics calculators and whilst I know that they're not necessary, it does seem like they could be useful in FP2 and I have got scholarship money that I can spend on it so I can definitely easily afford one.
I wouldn't have thought that I needed a particularly fancy model and I don't want to spend more money than necessary so the Casio 9750GII looked like a good choice, but it apparently doesn't have a natural display (it doesn't show surds and fractions etc) which I really don't like. On the other hand, the rest of the graphic calculators are very expensive (>£100) and have fancy features I don't need like a colour screen. Is there something in between?
I wouldn't have thought that I needed a particularly fancy model and I don't want to spend more money than necessary so the Casio 9750GII looked like a good choice, but it apparently doesn't have a natural display (it doesn't show surds and fractions etc) which I really don't like. On the other hand, the rest of the graphic calculators are very expensive (>£100) and have fancy features I don't need like a colour screen. Is there something in between?
0
reply
Mr M
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#2
Report
#2
(Original post by Chlorophile)
My teachers suggested that we get Graphics calculators and whilst I know that they're not necessary, it does seem like they could be useful in FP2 and I have got scholarship money that I can spend on it.
I wouldn't have thought that I needed a particularly fancy model and I don't want to spend more money than necessary so the Casio 9750GII looked like a good choice, but it apparently doesn't have a natural display (it doesn't show surds and fractions etc) which I really don't like. On the other hand, the rest of the graphic calculators are very expensive (>£100) and have fancy features I don't need like a colour screen. Is there something in between?
My teachers suggested that we get Graphics calculators and whilst I know that they're not necessary, it does seem like they could be useful in FP2 and I have got scholarship money that I can spend on it.
I wouldn't have thought that I needed a particularly fancy model and I don't want to spend more money than necessary so the Casio 9750GII looked like a good choice, but it apparently doesn't have a natural display (it doesn't show surds and fractions etc) which I really don't like. On the other hand, the rest of the graphic calculators are very expensive (>£100) and have fancy features I don't need like a colour screen. Is there something in between?
0
reply
Chlorophile
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#3
(Original post by Mr M)
I think your teachers have given you very poor advice. Don't waste your scholarship money unless it can only be spent on a graphical calculator.
I think your teachers have given you very poor advice. Don't waste your scholarship money unless it can only be spent on a graphical calculator.
0
reply
fran-11
Badges:
0
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#4
Report
#4
(Original post by Mr M)
I think your teachers have given you very poor advice. Don't waste your scholarship money unless it can only be spent on a graphical calculator.
I think your teachers have given you very poor advice. Don't waste your scholarship money unless it can only be spent on a graphical calculator.
1
reply
Mr M
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#5
Report
#5
(Original post by Chlorophile)
But in our FP2 textbook there are some questions which ask you to sketch some complex functions which you definitely could work out but it would take some time, which isn't really what you want in an exam?
But in our FP2 textbook there are some questions which ask you to sketch some complex functions which you definitely could work out but it would take some time, which isn't really what you want in an exam?
0
reply
Chlorophile
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#6
(Original post by Mr M)
The questions in your textbook are irrelevant. You have a computer in front of you presumably? Bung the questions into WolframAlpha for free.
The questions in your textbook are irrelevant. You have a computer in front of you presumably? Bung the questions into WolframAlpha for free.
0
reply
Mr M
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#7
Report
#7
(Original post by Chlorophile)
So you won't be asked to sketch a function like y2=x2(Ax-1) in the FP2 exam?
So you won't be asked to sketch a function like y2=x2(Ax-1) in the FP2 exam?
Edit: You'd be better off watching my
Powerpoint.
0
reply
H0PEL3SS
Badges:
12
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#8
Report
#8
(Original post by Chlorophile)
My teachers suggested that we get graphics calculators and whilst I know that they're not necessary, it does seem like they could be useful in FP2 and I have got scholarship money that I can spend on it so I can definitely easily afford one.
I wouldn't have thought that I needed a particularly fancy model and I don't want to spend more money than necessary so the Casio 9750GII looked like a good choice, but it apparently doesn't have a natural display (it doesn't show surds and fractions etc) which I really don't like. On the other hand, the rest of the graphic calculators are very expensive (>£100) and have fancy features I don't need like a colour screen. Is there something in between?
My teachers suggested that we get graphics calculators and whilst I know that they're not necessary, it does seem like they could be useful in FP2 and I have got scholarship money that I can spend on it so I can definitely easily afford one.
I wouldn't have thought that I needed a particularly fancy model and I don't want to spend more money than necessary so the Casio 9750GII looked like a good choice, but it apparently doesn't have a natural display (it doesn't show surds and fractions etc) which I really don't like. On the other hand, the rest of the graphic calculators are very expensive (>£100) and have fancy features I don't need like a colour screen. Is there something in between?
0
reply
Chlorophile
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#9
(Original post by Mr M)
How will a graphical calculator help you there? You don't know the value of A. Are you just going to try various values?
How will a graphical calculator help you there? You don't know the value of A. Are you just going to try various values?
(Original post by H0PEL3SS)
I have the 9750GII, but there is an update that allows the calculator to use a natural display. I do find it really useful in FP2, so it can save time in lessons and frees.
I have the 9750GII, but there is an update that allows the calculator to use a natural display. I do find it really useful in FP2, so it can save time in lessons and frees.
0
reply
Mr M
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#10
Report
#10
(Original post by Chlorophile)
the hard part is sketching it
the hard part is sketching it
0
reply
Chlorophile
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#11
(Original post by Mr M)
That's a matter of opinion. I knew what it looked like instantly.
That's a matter of opinion. I knew what it looked like instantly.
1
reply
robzwolf
Badges:
2
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#12
Report
#12
My friend bought the FX-9750GII for £55 and he uses it in conjunction with the FX-991ES Plus (~£7) — the cheap calculator does things like natural display etc., whereas his 9750 does all the hardcore graphical work.
Just to irritate him a bit, I bought myself the next model up: the FX-9860GII
Cost me about £80 though, but it does come with a light-up screen! 
It handles the natural display well, too, and it's a slightly larger display.
I qualify for the level 2 bursary at school (£800/year), and I used it to buy this. Comes in very handy.
Just to irritate him a bit, I bought myself the next model up: the FX-9860GII
Cost me about £80 though, but it does come with a light-up screen! 
It handles the natural display well, too, and it's a slightly larger display.I qualify for the level 2 bursary at school (£800/year), and I used it to buy this. Comes in very handy.
0
reply
H0PEL3SS
Badges:
12
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#13
Report
#13
(Original post by Chlorophile)
The question was to sketch that curve when it passes through a particular point. Given the point, working out the value of A is obviously really easy, the hard part is sketching it once you have A.
Really? I saw something like this but it was a kind of hack.
The question was to sketch that curve when it passes through a particular point. Given the point, working out the value of A is obviously really easy, the hard part is sketching it once you have A.
Really? I saw something like this but it was a kind of hack.
0
reply
Mr M
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#14
Report
#14
(Original post by Chlorophile)
Well I'm really pleased for you but you're also a Maths teacher. I didn't know what it would look like instantly and I honestly don't know how I'd work that out without generating lots of points.
Well I'm really pleased for you but you're also a Maths teacher. I didn't know what it would look like instantly and I honestly don't know how I'd work that out without generating lots of points.
If I asked you to sketch
I don't imagine you would need to reach for a calculator. This honestly isn't much harder.
0
reply
Chlorophile
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#15
(Original post by Mr M)
If you look back I offered to help. Perhaps you should wait to be taught the topic?
If I asked you to sketch I don't imagine you would need to reach for a calculator. This honestly isn't much harder.
If you look back I offered to help. Perhaps you should wait to be taught the topic?
If I asked you to sketch
I don't imagine you would need to reach for a calculator. This honestly isn't much harder.
0
reply
Mr M
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#16
Report
#16
(Original post by Chlorophile)
How is it not much harder? y=x^3 is a standard equation. If there's a simple way of knowing how y^2=x^2(Ax-1) would look like, I'd be very interested in knowing because I genuinely don't...
How is it not much harder? y=x^3 is a standard equation. If there's a simple way of knowing how y^2=x^2(Ax-1) would look like, I'd be very interested in knowing because I genuinely don't...
? If so then you sketch this.
0
reply
Chlorophile
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#17
0
reply
Mr M
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#18
Report
#18
(Original post by Chlorophile)
Well obviously that's not very difficult but you then have to root that. I don't see how you get from that graph to the actual one. I can't see any similarities.
Well obviously that's not very difficult but you then have to root that. I don't see how you get from that graph to the actual one. I can't see any similarities.
0
reply
Chlorophile
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#19
(Original post by Mr M)
If you watch my Powerpoint (second time I have offered) it will tell you. It is simple to step from y = f(x) to y^2 = f(x). In this case anything with a negative y value is ignored so you just have a single positive branch. Reflect this in the x axis. Finished.
If you watch my Powerpoint (second time I have offered) it will tell you. It is simple to step from y = f(x) to y^2 = f(x). In this case anything with a negative y value is ignored so you just have a single positive branch. Reflect this in the x axis. Finished.
0
reply
Mr M
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#20
Report
#20
(Original post by Chlorophile)
I'd be very grateful to see the powerpoint - I didn't see your edit.
I'd be very grateful to see the powerpoint - I didn't see your edit.
0
reply
X
Quick Reply
