Friends here I show you a simple but awesome CASIO fx-991ES trick. Just learn this trick and show it to your friends and get an awww……..:) from them. So get ready to surprise your friends.
But before we proceed, let me tell you something. This trick works in CASIO fx-991ES (and not in CASIO fx-991ES plus) and I have manually tested it. So read the following simple steps ‘carefully’ and do exactly as specified. For simplicity and better understanding, and to avoid confusion I have arranged the trick in step by step manner.
First set your calculator on default mode i.e., comp, degree and MthIO mode. If it’s not set then press shift >>press 9 >> press 3 for ALL >>press=>>press AC key now default mode is set.
Now write pol(0,1). Shift >> + key>> 0 >>shift >> ‘)’ key (or X key) >>1>> ’)’ key.
You will get r=1, angle(theta)=90 degree as output.
Press fraction key 10 times.
Press the right key on the REPLY button until you reach down and get out of the fraction.
Press x^(power) button,(above sin button).
Press = . You will get a syntax error but no problem, proceed.
Press AC .
Press up key on reply button, output will be pol(0,1).
Press left key three times.
Press DEL to delete 1 . It should appear
Press fraction key.
Press 1 in numerator.
Come down and press 1 in denominator.
Output: 1/1 r=1, theta= 90.
Press Abs key or (shift >> hyp key) five times.
Press under root key until the magic occurs.
Do the above steps as it is and see what happens. Many have reported that this trick also works in fx-570ES and fx-85ES. Check it in your calculator and let me know about it through your comments. Don’t like reading? Want some visual stuff. Here is a YouTube video which will demonstrate exactly how to do this Casio trick.
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Hi, this is Vinay Kumar Jaiswal from Hyderabad - a blogger by interest and an engineer by academics. I can be seen playing with computers, mobiles, codes, Internet and doing many techie things. I love spending time online. This blog is an attempt of mine to drop few more drops of quality tech and blogging content into the vast ocean of info already available.
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