hello,
There is a bug when you are trying to solve a Quadratic and Cubic Equations.
For example:
2x^2-6x+5=0
There is no solution to this problem but the calculator still write an answer.
Mic
Bug In Casio Fx991 Ms
Started by
Mic
, Nov 15 2014 10:31 AM
2 replies to this topic
#2
Tritonio
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Casio Addict
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Calculators:
fx-5800P, fx-991ES+, fx-991EX, HP Prime, fx-9750GIII, fx-3650P II
Posted 15 November 2014 - 12:14 PM
There are two complex solutions to this equation. What does your calc display?
#3
pan.gejt
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Calculators:
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Posted 15 November 2014 - 08:24 PM
Why do you think there are no solutions?
D=(-6)^2-4*2*5=36-40=-4
sqrt(D)=sqrt(-4)=sqrt(4*i^2)=sqrt(4)*sqrt(i^2)=2*i
x1=(6+2i)/4=6/4+2i/4=3/2+i/2
x2=3/2-i/2
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