EDIT2: As @simpatico pointed out, this method will not work for numbers that are out of calculator's precision. If you want to compute say 200^5 mod 391 then some tricks from algebra are needed. For example, using rule(A * B) mod C = ((A mod C) * B) mod C we can write:
To do this process on a simple calculator do the following:Take the dividend (7) and divide by the divisor (3), note the answer and discard all the decimals -> example 7/3 = 2.3333333, only worry about the 2. Now multiply this number by the divisor (3) and subtract the resulting number from the original dividend.
Download Scientific Calculator Fx-991es
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so I've been using this calculator for around 4 years now and noticed that the backcover is slightly loose and doesn't have that satisfying click when you slot it in the cover. Is there a way to tighten the cover so that it clicks again when I slot the calculator back in the case
The natural textbook display is a way of displaying formulae in the closest possible way to handwriting. For example, fractions are displayed vertically. This makes it easy to write and edit formulae naturally without the complicated brackets. It is enabled by default on supporting calculators, including fx-82ES and fx-991ES. You can enable MathO mode using SHIFT SETUP, 1.
If you have any questions with any of the content here, feel free to contact me. The content has been created using the Casio fx-ES emulator to replicate the procedures possible on the actual calculators. The interface is identical to a physical calculator of that model.
I have a Casio fx-20 scientific calculator dating from the mid 70s. Been well looked after. Today it stopped working (used it earlier in the day). The display is lit (a 0 lights up) -- but the keys cannot be activated. None of them works. I checked the batteries and changing them made no difference. Is there a way to open it up and maybe clean something inside? I love it and want to continue using it. Thank you.
Hi, your tutorials are very useful for my daughter and her friends. It help them a lot to start learning how to use this tool. Could you please send me the fx-991es plus emulator? Thank you in advance.
for example :- I have to calculate remainder of 2345763534 rem 24 and other media except calculator is forbidden. If this isn't possible through calculator then any short cut method are also appreciated. ff782bc1db
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