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Cardsafeguard are they for real ? - Computers & Internet

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Hello Stefano Marchesi,

They CERTAINLY are... "REAL"

(they deal in FEAR... I prefer dealing in paranoia
(THEY all are out to get you (all of us... suckers))).

I AM Not entirely convinced I know what your
QUESTION here really is... but (with me) you
have struck a nerve (hence follows pure opinion)...

One of many things you want to "SAFEGUARD" in
the ENTIRE contents of your wallet/purse...
are your "CARDS"...

(and more.. CARDSAFE types do not care
(in my opinion)).

I view voluntarily HANDING them all over to some
minimum wage CLOWN (or even high priced
BUSINESS MANAGER) as yet another
opportunity for EXPOSURE... (& identity theft).

I would rather suggest... (rely only on yourself):

No more than annually... dumping your
EVERY CONTENTS of your wallet/purse...
Lay it ALL out on the COPY MACHINE..

>> Do two (2) copies (front & back).

>> Check that they are readable

>> Designate a HOME & AWAY storage location


>> Store your copy in the same place you keep your CHECK REGISTERS 7 important CHECK STUBS... at HOME.

>> An AWAY LOCATION ... let your SAFE DEPOSIT...
CLOSE FRIENDS or FAMILY in a reciprocal agreement.

Anywhere that is different, fire & quake wise...
In a self addressed STAMPED envelope to YOURSELF.

Leave them unopened...
Stack a couple...
Burn the old ones... Hopefully NEVER USED.


A trusted friend can be your BACK-UP... & you can be theirs.

Same way I treat my TAXES... a HOME & AWAY copy.

With any luck... the WISDOM will never present itself...
but EVERYONE who has ever survived a fire, flood or
other DISASTER knows of what I speak.

Just do it.

As for cardsafe... (my opinion):
Find a BETTER WAY TO SQUANDER your money.

Carnac the Magnificent

Posted on Aug 11, 2017

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According to California Real Estate Law, the California state government is the authorized person who issue and revoke a real estate license. Sydney Property Valuers

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Edit Casio FX - 9860G SD have complex equations??


Thhe Casio FX-9860G SD can solve a polynomial equation of degree 2 or 3 with REAL coefficients. If the complex MODE is set to REAL it will find the real roots. If the complex mode is set to a+ib, it will find the real and complex roots.

Apparently it will take coefficients that are real, and will give a Ma Error if any coefficient is complex.

Addendum.
The calculator CANNOT solve equations with complex coefficient. YOU can however convert the system of linear equations with ccomplex coefficients ( of the type you show) as a system of 4 linear equations in 4 unknowns; Split x into a real and an imaginary part, split y into a real and an imaginary part. Substitute Real(x)+iIm(x) for variable x in the equations; substitute Real(y)+iIm(y) for y in the two equations; do the algebra. In each of the original equations split the Real and imaginary parts. You should be able to derive 4 linear equations in unknowns Real(x), Im(x), Real(y), and Im(y).
Use the linear equation solver to obtain the solutions. Recompose x=Real(x)+iIm(x), and y=Real(y)+iIm(y)

Alternatively, after you create the system of 4 linear equations you can use the matrix utility to find Real(x), Im(x), Real(y) and Im(y) and recompose the x and y.

Mar 17, 2012 | Casio FX-9860G Graphic Calculator

1 Answer

Casio FX - 9860G SD have complex equations?? edit


The Casio FX-9860G SD can solve a polynomial equation of degree 2 or 3 with REAL coefficients. If the complex MODE is set to REAL it will find the real roots. If the complex mode is set to a+ib, it will find the real and complex roots.

Apparently it will take coefficients that are real, and will give a Ma Error if any coefficient is complex.

Addendum.
The calculator CANNOT solve equations with complex coefficient. YOU can however convert the system of linear equations with ccomplex coefficients ( of the type you show) as a system of 4 linear equations in 4 unknowns; Split x into a real and an imaginary part, split y into a real and an imaginary part. Substitute Real(x)+iIm(x) for variable x in the equations; substitute Real(y)+iIm(y) for y in the two equations; do the algebra. In each of the original equations split the Real and imaginary parts. You should be able to derive 4 linear equations in unknowns Real(x), Im(x), Real(y), and Im(y).
Use the linear equation solver to obtain the solutions. Recompose x=Real(x)+iIm(x), and y=Real(y)+iIm(y)

Mar 17, 2012 | Casio Office Equipment & Supplies

2 Answers

Bibbliography of real numbers


Real Numbers are just numbers like: 1 12.38 -0.8625 3/4 ?2 1998 In fact:

Nearly any number you can think of is a Real Number
Real Numbers include: yes.gif Whole Numbers (like 1,2,3,4, etc) yes.gif Rational Numbers (like 3/4, 0.125, 0.333..., 1.1, etc ) yes.gif Irrational Numbers (like ?, ?3, etc )

Real Numbers can also be positive, negative or zero.
So ... what is NOT a Real Number? no.gif ?-1 (the square root of minus 1) is not a Real Number, it is an Imaginary Number no.gif Infinity is not a Real Number And there are also some special numbers that mathematicians play with that are not Real Numbers
Why are they called "Real" Numbers?

Because they are not Imaginary Numbers.
The Real Numbers did not have a name before Imaginary Numbers were thought of. They got called "Real" because they were not Imaginary. That is the actual answer!
The Real Number Line The Real Number Line is like an actual geometric line.
A point is chosen on the line to be the "origin", points to the right will be positive, and points to the left will be negative.

real-number-line.gif A distance is chosen to be "1", and the whole numbers can then be marked off: {1,2,3,...), and also in the negative direction: {-1,-2,-3, ...}
Any point on the line is a Real Number:

  • The numbers could be rational (like 20/9)
  • or irrational (like ?)
But you won't find Infinity, or an Imaginary Number.
Real does not mean they are in the real world blue-speech.gif They are not called "Real" because they show the value of something real.
In mathematics we like our numbers pure, if we write 0.5 we mean exactly half, but in the real world half may not be exact (try cutting an apple exactly in half).

Jul 10, 2011 | Computers & Internet

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