For now, xi is always.Greek letters can appear in the subscript too.Amu=2.0AmuA = 2.0Thegeneral ruleisthis. To see a symbols value, justevaluate it.N3529471145760275132301897342055866171392Beyond its prosaic syntax, Eigenmath does have a few tricks up its sleeve.For example, a symbol can have a subscript.NA=6.02214*10^23NANA = 6.02214 1023A symbol can be the name of a Greek letter.xi=1/2xi =12Since xi is, how is xi entered?Well, that is an issue that may get resolvedin the future. For example, the following is parsed as (x1)/2.x^1/212xSo in general, parentheses are needed when the exponent is an expression.x^(1/2)x1/251.2 DeningsymbolsAs we saw earlier, Eigenmath uses the same syntax as dear old Fortran.N=212^17No result is printed when a symbol is dened. Never mind the minus sign, what is the bindingof the caret symbol itself? The answer is, it binds to the rst symbol thatfollows it and nothing else. So Eigenmathrequiresx^(-1/2)which is unambiguous.Now a new question arises. For example, considerx^-1/2It is not clear whether the exponent should be 1 or 1/2. For example,10^(-3)instead of10^-3Thereasonforthisisthatthebindingofthenegativesignisnotalwaysobvious. To see the value of a symbol, just evaluate it by putting it on a lineby itself.NN= 352947114576027513230189734205586617139241.1 NegativeexponentsEigenmath requires parentheses around negative exponents. We can enter oat or click on the oatbutton to scale the number down to size.float3.52947 1039Now let us see if Eigenmath can nd the seventeenth root of this number,like the Hindu calculator could.N=212^17NN= 3529471145760275132301897342055866171392N^(1/17)212It is worth mentioning that when a symbol is assigned a value, no result isprinted. 418 Built-infunctions 429 Syntax 5431 IntroductionThe following is an excerpt from Vladimir Nabokovs autobiography Speak,Memory.A foolish tutor had explained logarithms to me much too early,andI hadread(inaBritishpublication, theBoysOwnPa-per,I believe) about a certain Hindu calculator who in exactlytwo seconds could nd the seventeenth root of, say, 3529471145760275132301897342055866171392 (I am not sure I have got thisright anyway the root was 212).We can check Nabokovs arithmetic by typing the following into Eigenmath.212^17After pressing the return key, Eigenmath displays the following result.3529471145760275132301897342055866171392So Nabokov did get it right after all. 52 Draw 83 Scripts 114 Complexnumbers 135 Linearalgebra 156 Calculus 176.1 Derivative.
This format is refered as "monochrome Bitmap" in some softwares, and in other softwares you just get it by setting an indexed image with a 2-colors palette.Eigenmath ManualJanuary1,200912Contents1 Introduction 31.1 Negative exponents. This logo is in fact a BMP image included in the OS - and from now on, a new tool is going to let you overwrite that image! You can now fully customize your Casio calculator - why not putting an image with your nick in order to prevent theft? The BMP image has to be in 128 x 64 pixels, with 1-bit color depth. When powering off your fx-7400Gii, fx-9750Gii, fx-9860G or fx-9860Gii, you are shown a nice Casio logo.
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