For example, to plot a graph of some function f ( x) first of all, you need to create a series of variable values x- it must be a ranged variable for this to work.Īttention. Ranked variables are widely used in plotting. Step - the specified step for changing the variable These variables have a series of fixed values, either integer or varying in a certain step from the initial value to the final one.Īn expression is used to create a ranged variable: If necessary, you can set other values for these variables. This, for example, TOL - the error of numerical calculations, ORIGIN - the lower limit of the value of the index index of vectors, matrices, etc.
It is better to count them system variables. MathCAD treats uppercase and lowercase letters as different identifiers.ĪT MathCAD contains a small group of special objects that cannot be attributed either to the class of constants or to the class of variables, the values of which are determined immediately after the program is started. Variables are assigned values using the assign sign (:=). Variables can be numeric, string, character, etc. Variables are named objects that have some value that can change as the program runs. In measurements the categories most known to you: Length - length (m, km, cm) Mass - weight (g, kg, t) Time - time (min, sec, hour). To write down the dimensional constant, you must enter the sign * (multiply) after the number, select the menu item Insert subparagraph Unit. If it is necessary to divide the entire expression in the numerator, then it must first be selected by pressing the spacebar on the keyboard or by placing it in brackets.Ĭonstants- named objects that hold some value that cannot be changed.ĭimensional constants are common units of measurement. The calculation process is carried out using:Ĭalculator Panels, Calculus Panels and Estimation Panels. On the keyboard (semicolon in the English keyboard layout) or by pressing the corresponding button on Boolean panel.Īn operator (simple equals) reserved for outputting the value of a constant or variable. For example, if a variable is assigned a value in this way at the very end of the document, then it will have the same value at the beginning of the document.Īpproximate equality operator (x1). This assignment can be made anywhere in the document. Prior to this assignment, the variable is not defined and cannot be used.
On the keyboard (colon in the English keyboard layout) or by pressing the corresponding button on the panel Calculator) The following statements are used to assign or display the contents of the memory location associated with a variable:Īssignment sign (entered by pressing the key : For example, in the expression 5!+3, the numbers 5! and 3 are the operands of the "+" (plus) operator, and the number 5 is the operand of the factorial (!).Īny operator in MathCAD can be entered in two ways:īy pressing a key (key combination) on the keyboard Operand- the number or expression that the operator acts on. These, for example, include symbols for arithmetic operations, signs for calculating sums, products, derivatives, integrals, etc.Ī) the action to be performed in the presence of certain values of the operands ī) how many, where and what operands should be entered into the operator. Operators- elements of MathCAD with which you can create mathematical expressions. The basic elements of MathCAD mathematical expressions include operators, constants, variables, arrays, and functions. Clicking on the math toolbar button opens an additional toolbar:
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