Part 1: Talking to Maple - Maple Help

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Part 1: Talking to Maple

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Introduction

How to Get Started

Entering Math

See Also

Introduction

 

Maple Tutorials are designed to help you get started with Maple, learn about the key tools available in Maple, and lead you through a series of problems.

 

In Part 1: Talking to Maple, you will become fluent using the Maple environment. You will learn how to use context menus and palettes to perform analysis and create interactive graphics, without needing to know any Maple commands.

 

To try this material on your own, start with an empty Maple document. Perform the steps described in the left column of each table below.  The results of the steps are displayed in the right column for reference.

 

Refer to Help>Quick Reference for basic getting started tips.

 

Note for non-Windows users: The keystrokes given in this document are for Windows.  There will be differences for other platforms. If you are using a different platform, see Help>Quick Help for the list of the most common keystrokes.

 

How to Get Started

 

In this section, you will learn the basics of asking Maple a question and getting the result.

Steps

Results

Using [Enter]

 

When you launch Maple you start with a blank document, with menus and toolbars at the top and palettes on the side. At the cursor, you can start typing math. Press [Enter] to see the result.

Example: Type "1+2 [Enter]".
Notice that the result appears on the next line.

 

Example: Type "x^2 +5 -2".  Notice that typing "^" automatically moves you to the exponent position. To leave the exponent, use the right arrow [→] key.  Press [Enter] to see the result.

1+2

3

(2.1)

x2+52

x2+3

(2.2)

Context Menus

 

You can use context-sensitive menus to perform a wide variety of mathematical and other operations.  


Example: Place your cursor on the last result, and right-click. The context-sensitive menu offers several operations that you can perform on the current expression.  To integrate this expression, select Integrate, then x.

 

Example: To plot the result of the integration, right-click on the result, and then select Plots > 2-D Plot.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tip: You can modify the plot after it has been created.  Simply click on the plot and then right-click on the plot and use the context-sensitive menus, or access the Plot menu and the plotting toolbar.

 x2+52

x2+3

(2.3)

integrate w.r.t. x13x3+3x

Changing the Problem

 

Mathematics in a Maple document are live. You can go back, make changes, and re-execute the problem to obtain a new result.

 

Example:  Go back to your original calculation "1+2", change the number "1" to a "3", and press [Enter]. Note the change in output.

 

Example:  In the context menu example, above, change the x2 to 10 x2.  Highlight the entire line, including the plot, then click the execute button, , found at the top of the Maple worksheet. All selected calculations are updated.

3+2

5

(2.4)

 10 x2+52

10x2+3

(2.5)

integrate w.r.t. x103x3+3x

Tip: Clicking on the Execute All button, ,  recalculates the entire document.

Entering Math

 

There are a number of methods to enter math into Maple.  You can enter math using a combination of palettes, keyboard shortcuts, context menus, and commands.  Most operations can be entered in more than one way, so you can pick the method you are most comfortable with.

Steps

Result

Exact Answers and Numeric Approximations

 

Maple calculates exact answers. That is, fractions remain as fractions and ⅇ and π remain symbolic throughout calculations.  This reduces errors due to approximations in multi-step calculations.

 

Example: On a new line, enter "1/2 + 1/3".

Note that typing [/] automatically moves you to the denominator. The right arrow will take you out.  Press [Enter] to see the result.

 

Maple also calculates numeric approximations.  

Example: Right-click the above result and select Approximate from the context menu. Select accuracy of 5 digits.

 

If your problem uses decimals already, Maple will return the answer in the same format, with floating point numbers.

Example: Enter 0.5x+13 x, and press [Enter].

 

You can apply different formatting to numeric results.

 

Example: Right-click the above result and select Numeric Formatting... from the context menu. Select Scientific, then press Apply Formatting.

 



12+13at 5 digits0.83333

0.5 x + 13 x

0.5 x + 13 x

8.33×10-1x

(3.1)

Palettes

Maple has over 1000 palette symbols within more than 20 palettes.  You can use Maple's Expression or Calculus palettes to enter common mathematics expressions.  These palettes contains fill-in-the-blank templates for common operations.

 

 

Example: Using the Calculus palette, find the integral of 4t6+sintdt.

 

Start by placing your cursor where you want to work.  Open the Calculus palette (click on Calculus on the left-hand side of your Maple document) and click the indefinite integral fⅆx.  An indefinite integral template will appear in your worksheet.  Fill in the placeholders, using [Tab] to move to the next placeholder. When done, press [Enter] to evaluate.

 

 

 

Example: Use the Calculus palette to find the limit of a function.

 

Start by placing your cursor where you want to work.  Open the expression palette (click on Calculus on the left-hand side of your Maple document) and click the limit expression limxaf . Fill in the placeholders, using [Tab] to move to the next placeholder. When done, press [Enter] to evaluate.

 

Tip: Put frequently used palette entries on the Favorites Palette. Right-click on the palette button and select Add to Favorites Palette.

4t6+sint ⅆt

47t7cost

(3.2)

limx0sinx2x

Symbol and Command Completion

The symbol and command completion mechanism provides an alternative to palettes for entering symbols.

Type the first few characters of the symbol name, and press [Esc]. Choose the symbol you want from the list.


Example: Try entering  π2+x

To enter π,type "pi [Esc]".  Select the symbol π.

Use [^] to enter the exponent.  To leave the exponent, use the right arrow [→] key.

For x, enter "sqrt [Esc]".Select the  x  option. Press [Enter].

 

 

 

To enter the exponential function ⅇ or the imaginary number , use symbol completion.

 

Example: Plot y=ⅇx.  Use symbol completion to create the exponential ⅇ.  Type "e [Esc]", and select e (exponential) from the list.  Then use the context menu to plot the function, by selecting Plots > 2-D Plot of Right Side.

 

Note: Simply typing "e" will produce the name e.  To enter the exponential function, you must select e(exponential) from the symbol completion list.  Alternatively, you can use the ⅇa template from the Expression palette.

 

 

 

 

 

 

 

π2+x

π2+x

(3.3)

y=ⅇx

Some command completion templates offer calling sequences for Maple commands, making it easy for you to get the syntax right on your first try.

 

Example:  Find the taylor series expansion of 11+ z2. about the point 2.

 

Type "taylor [Esc]".  From the list, choose taylor(series expansion).  The template taylorexpr,x=a,n is entered into your document.

 

Simply replace expr by 11+z2, x by z, and a by 2.  The last parameter, n, is the order of the expansion.  We will find the 4th order expansion.

 

 

taylor11+z2,z=2,4

15425z2+11125z2224625z23+Oz24

(3.4)

 

Case-Sensitivity

 

Maple is case-sensitive.
 
Example: Compute x+x.  Compute y+Y.


Compare the results.

 

x+x

2x

(3.5)

 

y+Y

Implicit Multiplication

 

Maple understands implicit multiplication. A space between terms is understood to mean multiplication.   

Example: Type "3 [Space] x  [Space] y"for "3 times x times y".

 

In the case of a number times a variable, the space can be omitted.

 

Example: Type "3x [Space] y"for "3 times x times y".

 

For readability, Maple automatically formats the expression to include a space between terms.

 

Caution:  The space can only be omitted in the case of a number multiplied by a variable. All other cases require a space or an explicit multiplication symbol (*).  

 

For example, "xy" means "x times y", but "xy" means the variable whose name is "xy".

 

Example: Type "x [Space] y+xy ".


If you choose to Differentiate using the context menu, you will see that x, y, and xy are treated as three separate variables due to the way they were entered.

 

Avoid confusion with function calls.  To us,  fx+1 looks like a function call, and xx+1 looks like implied multiplication.  Maple understands both of these as function calls. You must use a space or an explicit multiplication symbol to denote multiplication.

 

 

3 x y

3xy

(3.6)

3 x y

x y+xy

xy+xy

(3.7)

Mathematical Notation

 

Maple understands familiar mathematical notation.

For example, Maple understands that y''+y'+y=0 is a differential equation in yx.

Example: Enter the equation listed above (using the single quote ['] key for the prime notation).  To verify that it is in fact a differential equation, select Solve DE from the context menu.

 

y''+y'+y=0solve DEyx=_C1ⅇ12xsin123x+_C2ⅇ12xcos123x

Label References

 

Maple uses label references.


Whenever you use [Enter] to get a response, the result is automatically given an equation label.  To refer to a previous result in a computation, use [Ctrl][L] and enter the number of the equation label.

 

Example: Multiply the result π2+x (from above) by x, using labels.

x

π2+xx

(3.8)

Assignments

 

After entering an expression or performing a computation, you can assign the result to a name.

 

Example:

Enter the expression to the right, x+2 y3, right click on the output and select Expand.

 

Right-click on the output x3+6 x2 y+12 x y2+8 y3 and from the context menu choose Assign to a Name.  Enter "Answer1".

 

You can then use this name to refer to the result and to use it in further computations.

 

 

 

 

 

The assignment statement := (colon equals) assigns the right hand side to the name on the left hand side.

 

Example: Assign values to "value1" and "value2" and then add them together.

 

 

 

 

 

x+2 y3

x+2y3

(3.9)

= expand x3+6x2y+12xy2+8y3assign to a namex3+6x2y+12xy2+8y3

Answer1

x3+6x2y+12xy2+8y3

(3.10)

value15x

5x

(3.11)

value24x

4x

(3.12)

value1+value2

9x

(3.13)

Sometimes you do not want to see the results of the assignment statement. To suppress the result of any Maple operation, end your statement with a colon (:)

 

Example: Assign a value to a1, but do not show the result. Then, compute a12.  (To get a subscript, enter two underscores [_ _].  Use the right arrow to leave  the subscript.)

 

 

To clear a variable, use the unassign command. You must enclose the name in right single quotes [''].  This prevents Maple from automatically replacing a1 with its value before passing it to the command.

 

 

Note:  In Maple, you have to execute a command before it is processed.  Thus, you must press [Enter] (or [Ctrl][=] to display the result inline; for more information see 2-PuttingYourIdeasTogether) after each statement.

 

a11.2:

a12

1.44

(3.14)

unassign'a1':

a1

a1

(3.15)

Maple Commands

You can always enter Maple commands by typing them directly. Examples of Maple commands will be found throughout the tutorials.

 

Example: For instance, the definite integral of ex2 can be expressed using the integral symbol from the palettes or using the command int.

 

The calling sequence for definite integration is int(expression,x=a..b), where a and b are the endpoints of integration.  A range in Maple is given by a..b.  

 

You can enter the exponential function using symbol completion or using the name of the Maple command.  The name of the Maple command for the exponential function y=ex is exp.

 

Type "int(exp(x^2), x = 2.1..2.4)".

 

 

 


Example: Earlier, you solved the differential equation y''+y'+y=0 using the context menu.  Now, you will solve this using a command.  dsolve is the differential equations solver in Maple.  

 

Solve the differential equation above using dsolve.

∫2.12.4ⅇx2ⅆx

51.48568229

(3.16)

intexpx2,x=2.1..2.4

51.48568229

(3.17)

dsolvey''+y'+y=0

yx=_C1ⅇ12xsin123x+_C2ⅇ12xcos123x

(3.18)

Tip: Find the list of keyboard shortcuts for your platform.  Click Help > Quick Help menu, and select Math Editor Shortcuts.

 

Exercise: Using palettes and context menus:

• 

Create a polynomial in x and y, such as x2+xy+y2. Evaluate that polynomial at x=10.Integrate the result with respect to y.

See Also

Quick Help Details

 

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