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# A 6-minute slide show to illustrate the main features of - PowerPoint PPT Presentation

A 6-minute slide show to illustrate the main features of. Mathcad documents are used for engineering and financial mathematics calculations. They are intuitive, easily audited and portable. If what you see here looks like a better way to do your job, contact HRS today. . click here to begin.

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### A 6-minute slide show to illustrate the main features of

Mathcad documents are used forengineering and financial mathematics calculations.They are intuitive, easily audited and portable.

If what you see here looks like a better way to do your job,contact HRS today.

© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Here is a screen picture of a very simple Mathcad document

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

New variables can be based on any mathematical expression of existing variables

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

If you type the name of an existing variable, followed by the = sign, Mathcad gives you the present value of that variable

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

If you then change any variable that is used to define other variables, the values of the other variables are automatically updated

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Mathcad variables, the values of the other variables are automatically updated allows you to incorporate spreadsheets

When you double click on the embedded spreadsheet, you can activate it in Mathcad

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

And here is the expression you need to interpret! variables, the values of the other variables are automatically updated

Here is the value of z

Which do you prefer?

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Electrical calculations often use complex numbers variables, the values of the other variables are automatically updated

This is easier to calculate in a microprocessor

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Very often you will variables, the values of the other variables are automatically updateduse Mathcad’’s own built-in functions, that cover many areas of calculation

Now use it with a value of r -including units, if you want

Functions can use other functions

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Mathcad variables, the values of the other variables are automatically updated allows the use of units in its calculations, using the abbreviations you are used to. It will automatically take care of unit conversions and output its results in SI units.

Set the values of variables

Double click the units place-holder to change the units, if necessary

Define an expression

When you show the result, Mathcad knows this is an energy, and shows it in Joules

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Insert a data entry type Excel component variables, the values of the other variables are automatically updated

The data in the spreadsheet is stored in a matrix called M

Choose a 3D graph type

Type M to connect the data with the graph

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Choose an Excel component from here variables, the values of the other variables are automatically updated

See the Excel data within Mathcad

Getting specific data from Excel

Tell Mathcad names you want for the vectors

Say where the data is

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

You can plot your data, easily variables, the values of the other variables are automatically updated

Choose a 2D Scatter Plot

Replace the place-holders by the Year and Count variables

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Here we solve a system of nonlinear equations numerically. variables, the values of the other variables are automatically updated

We'll give the solver guesses for the variables to start the process:

“Given” and “Find” work in pairs

These equations set allowable values of x and y

The Find expression gives values of x and y that fit the conditions

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

When you do integrations, the method appropriate for the expression must be chosen.

I right clicked on the integral sign to show the options - Mathcad has chosen an adaptive algorithm.

In this case, the integration can be performed by evaluating this numeric expression.

Sometimes, an equation can be simplified before it is evaluated - this gives you greater speed and more precision. The Optimise option tells Mathcad to try this.

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

To designate a set of commands as a program, you use the program line tool

The assigned variable takes the value of the last assignment on the program line

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Select part of your document, and choose Insert/Area program line tool

You can highlight, lock and encrypt your key statements, so your documents are secure

Set the properties of the area

Choose whether to lock and/or collapse it

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

You might think this is a lot to learn. program line toolMathcad is powerful, but it is also intuitive, and comes with many web-based and built-in resources to get you started.

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Training program line tool

As with any program, the quickest, easiest, and in the long run cheapest way to learn is to pay a professional trainer to teach you and your staff.

HRS has a schedule of open-to-everyone beginner’s Mathcad courses and also runs customised in-house training courses.

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© HRS Ltd, 2002. In NZ phone 0800 477 776, www.hrs.co.nz

Thank you for taking the time to watch this presentation program line tool