Qualification > Math
IGCSE MATHS Doubts
The Golden Girl =D:
--- Quote from: Baladya on May 04, 2010, 11:54:13 am ---By the way speaking of calculators and this question...
My teacher told me a really cool trick in the calculator... If u have the (.,,,) button, you can use it to answer the questions that tell you to for example calculate the time of arrival. All you gotta do is put the hours(here 0830) like this: 08(press the button)30(press it)00(press), then - 08(press)00(press)00(press). It will give u the answer and u can change from decimels to hours and minutes by pressing the button (like the S<>D). By the way the first press is for hours, then min, then sec.
Hope u understood this cuz its really helpful :D ;D ;)
--- End quote ---
ya mine said the same :P
Baladya:
--- Quote from: haris94 on May 04, 2010, 11:50:56 am ---anyone knows how to solve quadratic equations on a calci (casio fx series)
--- End quote ---
Ya. For example 2x^2+2x-2
press the mode button. then press 5(EQN) and choose 3 (ax^2+bx+c=0) write 2 ENTER 2 ENTER -2 ENTER. IT will give u the first answer. ENTER gives u the second answer :D. If anther example (diff numbers) just change the numbers...
Ghost Of Highbury:
if u use Fx-991Ms (for a cubic eqn)
do this,..
On-->3 times "mode"--> "1" (Eqn) --> press the "right arrow" --> "3" --> type th co-efficient of x3 nd press "=" -->
type th co-efficient of x2 nd press "=" --> type the co-efficient of x nd press "=" --> type the value of "d" i.e co-efficient of x0 and press "=".
U'll get an answer..press "=" 2 more times to find the other values
e.g -> a cubic equation --> ax3 + bx2 + cx + d
Saladin:
Let me remind you all again, in CIE IGCSE FX-991MS AND ES ARE BOTH NOT ALLOWED!
I think the examiners in your school did not know that!
But to be on the safe side, do not use them! You gain no additional benefit in doing so. You will ALWAYS have to show your working!
Baladya:
By the way guys, a really important thing u wanna check when entering the exam is that your calculator is set to D (degrees). You can change it by pressing shift then mode. Choose the one which says Deg. I used to have it as Mth10 and i used to get wrong answers when doing cos bla bla...
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