calculatornumber-systems
When I do hexadecimal subtraction say, 2A-324 on a casio calculator or any calculator in general, i get the result as FFFFFD06
Why do i get so many F's ?? dosnt F stand for 15 in hex. In any general arithmetic, how many digits should i consider for the final answer, say in a subtraction operation in which the bigger number is negetive (324 in my example).
Is my answer only D06?
I don't have that model at hand to check for sure, but I think you can get a numerical approximation of the derivative at a point by graphing the function and using the trace feature with derivative turned on in the settings. Here is the relevant section of the manual, from chapter 8:
Actually, you press the OPTN button. Then, you press the NUM button (F5). Lastly, you press the Int button (F2). This is how I do it when I use the fx-9750GII calculator.
Best Answer
You get this result because the calculator uses only 32 bit arithmetic in this case, i.e. it actually computes $\mod 2^{32}.$ $$2A_{16}-324_{16}= -2FA_{16}$$ $$2A_{16}-324_{16}+ 2^{32}= FFFFFD06_{16}$$