# CASIO FX-991MS TRICKS PDF

1/23/Casio fxMS tips and tricks Project Nayuki Casio fxMS tips and tricks Introduction The Casio. Jun 17, mechboy Casio fxMS Tips and Tricks: “Casio fxMS Tips and Tricks The Casio fxMS it is a scientific calculator with many. There are some new trick and tweaks for use on the Casio FXMS 2-Line display scientific calculator. These tricks are just.

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The Casio fxMS is an affordable scientific calculator with many powerful features. Some of these can greatly reduce the effort to solve problems, while others can be abused in interesting and fun ways.

Being able to use these features can also be helpful on tests and exams where scientific calculators are allowed but more powerful graphing calculators are not. On this page, I will show you some advanced and clever tricks that you can do with the calculator. Although the article is for the Casio fxMS calculator and all the tricks mentioned here are guaranteed to work on itthe calculator features and underlying mathematical principles for the tricks are quite general and can be applied to many other calculators as well.

This article assumes that you know the basics of how to use the calculator. If not, please read the user manuals and review how to use the features on the calculator. The official Casio manuals are available in PDF format here:. These tricks are just built-in features of the calculator that are not entirely obvious, because the previous generation of scientific calculators did not have these features.

To solve a quadratic or cubic polynomial equation:. To solve a system of linear equations in 2 or 3 variables:. Enter the number of variables, which is also the number of equations 2 or 3.

Polynomials equations and linear systems are frequently occurring problems in mathematics and sciences, which makes this calculator feature one of the most useful ones. Trjcks an initial guess for the variable and press the equals button.

### fxMS – Calculators – Manuals – CASIO

Try to give a value near an actual solution, or else solving will be slow or will fail. However if the equation is linear, then any initial trickd works. The algorithm can easily hang, fail, or give a wrong answer, so beware — it is not an automatic solver for all equations. Although linear equations are simple to solve in theory, letting trocks calculator solve it for you can still save you some algebraic manipulation.

The 3 angles in a triangle are ABand C. B is twice of A. C is triple of B. Find the value of B. For example, this makes it much easier to use the rational root theorem to factor or solve polynomials. It takes on a random value for each instance in a formula and for each evaluation of a formula.

This can be useful answering multiple-choice questions, e. Go left or right? We inherited the sexagesimal base number system from the Babylonians.

While it makes some division problems easier for mental arithmetic, generally speaking decimal fractions are far easier to work with in practice. But for those times when you do need to work in sexagesimal or convert between it and decimal, this calculator comes to the rescue.

It supports number input in degree-minute-second format, and can convert to and from decimal format. Obviously, this feature is useful for doing calculations with angles expressed in DMS notation. These subdivisions are the same as the DMS scheme.

To illustrate how DMS features can be used to solve time-related problems, I present some example exercises:. This means 8 hours, 42 minutes, and 15 seconds. You start driving at At what time will you reach your destination? If the amount of partitioning is nthen the number of partitions is tridks n.

To exit the test at any time, press ON. Pressing ticks is not necessary on some older versions of this calculator. The first phase is the display test. The last display test shows To complete the test, press every key except ON in order from left to right, top to bottom.

## Casio fx-991MS Scientific Calculator Hands-on Review

The number on the screen increments every time you correctly hit the next key in the sequence. A major difference between this calculator and older scientific casoi is that this calculator does not evaluate the expression while you input it. The most recent expression evaluated can be re-evaluated simply by pressing the equals key. The result of each evaluation is always saved in the answer variable Ans. For single-statement iterations, it is most convenient to use Ans as the iterated variable.