Hello & welcome to fixya... faizanimranb
Realizing FIRST that computers can only count to one...
Even this site strains to accomplish basic/crude ASCII
symbols (especially any scientific NOTATION)
quite simply ... because it is not needed...
ASCII Wikipedia
One may buy a PIANO...
but without the years of training & practice...
it is just furniture (a cat might be interested)...
but MASTERFULLY playing the work of OTHERS
requires dedicated work... (no more than buying an
expensive paint brush would make you Vincent
Van Gogh
https://en.wikipedia.org/wiki/Vincent_van_Gogh
Math, Trig & Calculus symbols are only for people...
Much like language & music... LEARNING it is a
matter of PROXIMITY... Mimicking the word
"mama" elicits a response... and taking LANGUAGE
from there... Listening to others music... learning the
SCORE... LEARNING from playing other people's
composition... MUSIC follows... Performances.
Ultimately... A musician might be able to step into
the role of composer (not necessary for awesome
PERFORMANCES & Recitals (just not soon))...
Once you enter the world of mathematics...
Geometry, Trigonometry and Calculus being the
most "SYMBOLIC"... You are immediately
encouraged into the role of composer (the building
equations)...
Once you get those SYMBOLS, processes... even
theories & hypotheses (hopes) surrounded...
The "HOW" will become self evident ...!!
Vincent van Gogh
Please tell me first which buttons are used to do this first
Upgrade it into fx-570es http://www.youtube.com/watch?v=52YSOGcBMFI
SOURCE: casio fx-82ES scientific calculator
change the mode to stat and then start operating it in statistical mode
SOURCE: casio fx-82es significant figures
it should...
it can be found by SHIFT then MODE then SCI is the one you want to choose
SOURCE: In complex number mode, how to get out?
"Is there anything that I can do about this to stop my answers being complex numbers when solving cubic equations?"
You are making an assumption that is unwarranted.Namely that a cubic equation must necessarily have 3 real roots. This is not the case.
Let your equation be
If coefficients are complex you should expect some complex roots. Right?
If the coefficients are REAL then depending on the discriminant
you can have three cases
DELTA positive : three distinct real roots
DELTA=0 , the equation has a multiple root and all roots are REAL
DELTA negative: the equation has ONE real root and 2 complex roots that are complex conjugate of each other.
It suffices to look at the Tartaglia/Cardano expressions of the roots to know that more often than not there is going to be complex roots.
SOURCE: Hello How to solve complex
The simultaneous equation solver requires the coefficients to be real. Similarly matrices must have real coefficients.
Your only alternative is to express each of A and B as a real part and imaginary part.
A= x1+iy1
B=x2+iy2.
Substitute x1+iy1 for A in the two equations.
Substitute x2+iy2 for B in the two equations. Do the algebra. Gather real parts and gather imaginary parts. Split each original equation into two equations: One equation comes from setting Real Part of left side = real part of right side (1); the other equations comes from setting the imaginary part of left side= imaginary part of right side (here 0).
Do the same procedure for the 2nd original equation.
At the end of the process you will have 4 coupled linear equations in the 4 unknowns (x1,y1,x2,y2).
Then you might want to use the calculator to solve the derived system. Once you have x1,y1,x2,y2 you reconstruct A=x1+iy1, etc.
Hope it helps.8,565 views
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