virtual graphing calculator

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GeoGebra (Mathematical graphing Calculator)

650) this.width=650; "src=" http://imga.chrome001.com/article/201603/17/1500273xmhhez0oha4057o.png "border=" 0 " Class= "Shadow" alt= "GeoGebra (Mathematical Graphing Calculator)" style= "border:0px;vertical-align:middle;margin-bottom:0px;"/>Plugin Introduction:Mathematics is an indispensable part of our lives, everywhere will use the mathematics, in the course of learning Mathematics, the ordinary

Using the object-oriented graphing calculator

that invokes the __tostring method of the object to return a string, and echo outputs the string returned by the object . atthis outputs a form waiting for the user's input. -*/ -EchoNewForm ("index.php"); - -/*If the user clicks the Submit button, the result class is automatically loaded and the output*/ -if(isset($_post["Sub"])){ inEchoNewresult (); - } to?> + - the The form.class.php code is as follows: 1 Php2/*3Project: Object-oriented

PHP Object polymorphism Simple graphing calculator Gaulo PHP

Main Program Page test.php pageShape abstract Class Shape.class.php pageRectangle Class Rectangle.class.php Page Triangle Class Triangle.class.php page Browser Rectangle page650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M00/86/B3/wKioL1fH6jyDX36YAAAlAetgXQU441.png-wh_500x0-wm_3 -wmp_4-s_226034738.png "title=" Firefox _2016-09-01t08-42-48.546z.png "alt=" wkiol1fh6jydx36yaaalaetgxqu441.png-wh_50 "/ >Browser Triangle page650) this.width=650; "Src=" Http://s5.51cto.com/wyfs02/M02/86/B3/wKi

Classic case: Object-oriented Graphing calculator

Classic example: Object-oriented Graphing calculator

IOS Learning Note Interface Graphing Calculator--Lan Yi Education

point need to remove 0if (Self.resultlabel.text.length==1 ![ Title isequaltostring:@ "."] [Self.resultLabel.text hasprefix:@ "0"]) {Self.resultLabel.text = @ "";}Avoid entering decimal points continuouslyif ([title isequaltostring:@.]) {Determine if a string is includedif ([Self.resultLabel.text rangeofstring:@ "."]. length>0) {If it contains a.You can't just point it out. TheReturn}}Display the title in the lableSelf.resultLabel.text = [Self.resultLabel.textstringByAppendingString:title];If y

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