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- .MCAD 302010000 1 74
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- }
- {\plain {\ul \b RELEASE NOTES FOR
- MATHCAD 4.0}\par \par These notes provide
- last minute information on this version\par
- of Mathcad as well as corrections to the
- documentation.\par \par I: INSTALLATION
- ON BADLY FRAGMENTED DISKS\par \par Since
- your computer frequently saves and deletes
- files to\par your hard disk, it is normal
- for the hard disk to become\par "fragmented."
- This means that there isn't much contiguous\par
- free space on your disk. The result is that
- many files,\par especially big ones, have
- to be saved in small pieces in\par different
- parts of the disk.\par \par If your hard
- disk is badly fragmented, the computer
- has to\par hunt all over your hard disk
- for free space. This will\par significantly
- slow the installation. You may wish to\par
- unfragment your hard disk using any of a
- number of disk\par optimizing utilities.
- Doing so will increase performance not\par
- only for Mathcad but for all applications
- on your system.\par \par II: LOW MEMORY
- CONDITIONS\par \par The memory requirements
- given in the User's Guide are\par adequate
- for normal use. It is possible under some\par
- conditions to run out of memory.\par \par
- Such conditions might arise:\par \par
- (1) When many other applications are running
- at once.\par \par (2) When you're making
- unusually heavy use of\par symbolic
- math or SmartMath features, or\par \par
- (3) When you work with very large arrays.
- Since each\par element of an array
- requires 8 bytes of memory, a\par
- single 1000 x 1000 array will, by itself,
- use 8 MB\par of memory.\par \par
- Under these conditions, it is prudent to
- save your document\par frequently.\par
- \par III: WINDOWS SWAP FILES\par \par Windows
- 3.1 sets aside a portion of your hard disk
- for a\par "swap file." It uses this file
- to create "virtual memory."\par Since virtual
- memory makes use of the hard disk, it is\par
- slower than actual RAM. You can improve
- its performance by\par creating a permanent
- swap file if you have not already done\par
- so. Such a file makes use of contiguous
- blocks on your hard\par disk.\par \par The
- size of a permanent swap file is constrained
- by the\par smallest of the following three
- limits.\par \par (1) The amount of contiguous
- hard-disk space. You can\par increase
- this by defragmenting your hard disk as\par
- described in section I above.\par \par
- (2) 50% of your free disk space.\par \par
- (3) Four times the amount of RAM on your
- system plus 4MB.\par Thus, 3MB RAM
- allows no more than 3MB*4 + 4MB or 16MB\par
- of swap file space.\par \par IV: ADDITIONS
- TO DOCUMENTATION\par \par A: Printing\par
- You may find options for collate and number
- of copies grayed\par out on your Print
- dialog box. Since Windows uses the same\par
- Print dialog box for all printers, these
- are probably gray\par because your particular
- Windows printer driver does not\par support
- these features.\par \par B: Colors\par
- Mathcad can display only those colors available
- on your\par display. If your colors do
- not display as you expect them\par to, check
- your available colors through the Windows
- control\par panel.\par \par C: Zooming
- Windows\par You can edit both math and text
- when zooming in for a close-\par up view
- of your document (zoom factor > 100%).
- However, when\par you zoom out for an overall
- view (zoom factor < 100%), you\par can
- edit only math regions. You cannot edit
- text. All other\par functions are as described
- on page 58 of the User's Guide.\par \par
- D: Fonts\par On some systems, fonts on the
- screen are a slightly\par different width
- from the corresponding font on the printer.\par
- Because of this, some text and math regions
- may extend\par beyond the right margin
- when printed even though they do not\par
- appear to do so on the screen.\par \par
- E: Copy Answer\par As mentioned on page
- 115, when you copy a numerical result,\par
- you copy only up to the precision displayed.
- However, if the\par result is displayed
- with trailing zeros, these zeros are not\par
- copied with the result.\par \par When you
- copy a numerical result to the clipboard
- as\par described on page 115, you cannot
- use that number in\par conjunction with
- the "Substitute for Variable" command on\par
- the Symbolic menu. To do so, first paste
- it into a blank\par space and copy it again.\par
- \par F: Polar plots\par Since polar plots
- must be circular, Mathcad does not permit\par
- you to resize a polar plot arbitrarily as
- you would an X-Y\par plot. When resizing
- a polar plot, always place the mouse\par
- pointer on the lower-right corner of the
- plot.\par \par V: CHANGES TO DOCUMENTATION\par
- \par The operator palette has changed since
- the User's Guide was\par printed. A button
- for the symbolic equal sign was inserted\par
- below the button for the numerical equal
- sign "=". This\par change affects most
- screen-shots in the User's Guide.\par \par
- Page 9\par The file "mathcad.clp" in the
- CLIPS directory is actually\par named "mathcad.smr."\par
- \par Page 89\par The Tab key in a text region
- moves to the end of the current\par word
- rather than to the beginning of the next
- word.\par \par Page 139\par In Figure 1,
- the default system of units is CGS. To\par
- reproduce this example, choose Units from
- the Math menu and\par make the default
- system of units CGS.\par \par Page 245\par
- Solve blocks can solve fifty equations in
- fifty unknowns,\par not forty-nine.\par
- \par Page 362\par The subscript for theta
- in the definition of Z in Figure 6\par
- should be n rather than m.\par \par VI:
- Difficulty locating MCAD.DLL\par \par If
- you are upgrading from Mathcad 3.1 you
- may encounter the\par error message "Cannot
- find MCAD.DLL." This message is a\par benign
- one. It merely indicates that you have
- an older 16-\par bit DLL on your system.
- If you have purchased Mathcad\par Function
- Packs in the past, you will find that these\par
- functions are undefined. None of the functions
- described in\par the User's Guide are affected.
- To update to a 32-bit file,\par please
- call MathSoft Technical Support at 1-800-628-4223\par
- between 9:00 and 5:30 Eastern time. From
- outside the U.S.A.\par or inside Massachusetts,
- call 617-577-1017.\par \par \par VII: INCOMPATIBILITIES
- WITH SHAREWARE\par \par Certain shareware
- memory monitoring software may be\par incompatible
- with Mathcad. If you are running such software\par
- and experience unexplained crashes, try
- disabling any memory\par monitoring software
- you have running.\par \par VIII: INSTALLATION
- ON 286\par \par Neither the installation
- program nor Mathcad will run on an\par
- 80286 based machine. If you attempt to install
- on such a\par machine you will get the
- error message "Bindtime error:\par Cannot
- load library: 'KRNL386.EXE.'"\par }
- }
-