Question about Casio Brand New-Fx-991es Plus - Scientific Calculator
When I type in a question using roots my calculator does not leave the answer in surd format. E.g. when you type in 2 x root 5..... the calculator used to give me the answer 2root5 (surd format) then I'd press S>D to get the decimal answer. Now when i do calculations in an exam and it says leave the answer in surd format I wont be able to do it. I must of fiddled about with the settings and messed it up. I'm finding this really annoying, could someone help. Thanks.
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Posted on Jan 02, 2017
SOURCE: Hi there, I have a
The calculator can't identify that this is a surd unless you input it as a surd, ie as 3/(4*sqrt(5))= when it will then show the equivalent form 3*sqrt(5)/20 (obtained by multiplying top and bottom by sqrt(5)) and you can swap between the two forms using the S<>D button. Even adding the next 4 decimal places (hidden) won't allow the calculator to identify the underlying surd as this is simply too complcated a calculation.
Posted on Jun 30, 2011
Change the output display to MathIO. You may be able to display square roots only: so no cube roots, nor fourth...
Posted on May 28, 2018
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