Tip 79. Mathcad sheet and À4
Fig. 79. Mathcad-sheet and À4
As rule when you print finished Mathcad-document
is output on the paper of the format À4, situated before a viewer (reader)
upright («portrait»). But in this case a problem appears quite often that
concerned with some formulas of the document «creep» their «end» into the right
(relative to user) side of the paper (its contours with truncated sides are
painted on a display) and even into the right side of the display with
relatively big (17, 19 inches cornerwise) size of a screen. Our tip will touch
with the paper of a printer as since the problem with the display is solved
simply: if there is no wish to use horizontal scrolling (rolling) of the screen
then it is possible to decrease «buzzer» of the screen (zoom, loop – tool that
you can find in the menu View and it is duplicated on the toolbar of Mathcad by
the window with the figure 100%). It is also more or less simple with formulas
input by user. If a formula has addition or subtraction then such binomial it
is possible to write with division of the formula with help of the chord[1] Ctrl+Enter, which breaks the document off two pages “in clear field”,
but in formula – the chord carries a factor over to the next line (for example,
see fig. 75). The chord Ctrl+Enter has begun to work only in seven version of
Mathcad. Before it such function had special key button on the toolbar. But
later on the key button was refused, the other words interface of a work with
computer was unitized – the chord Ctrl+Enter “breaks” off the page in Word too.)
Finishing the theme of “long” user’s expressions it is worth to mention about
that the formulas behind the universe are simple and short: E = m c2, F = m g and etc. Some affectation is always present at “long” formula…
The second source of long mathematical
expressions is not user but symbol mathematics of Mathcad. Analytical
value of the determinant of a square
matrix of size 3 on 3 is output in the fig. 79. Here are some tips how to «shorten» the results of work of the symbol
mathematics of Mathcad:
·
It is better to write coefficients
of initial matrix in the form of simple fractions but not decimal fractions. In
this case the decimal fraction with 20 signs (default) will not appear in the
reply – if we refuse the arithmetic with floating point then the analytical
reply will be much shorter;
·
To make an expression not to «get out»
the right side of the page it is possible if we decrease the size of variables
and constants of the initial expression. It is possible to decrease the size of
the “transformation” “temporarily” – in a point in tip-out of some concrete
formula. But is possible to decrease the size permanently if we change the
style of the variables and constants of the initial expression from Variables
and Constant to some user’s one (User 1… User 7) with small print;
·
Cardinal way of “abridgement” of
analytical transformations is showed at the end of the fig . 79. The analytical transformation “comes to a standstill” on
the page, hence it can be freezed earlier – on the screen of the display if we change
into a picture on which the transformation can be “shorten” with help of some
graphics editor, PaintBrush for example.
The
theme of the given tip (the problem of publication of Mathcad-documents) touches
with not only paper of a printer but also… Internet pages (sites). In Mathcad
2001 new option of saving Mathcad-documents has appeared: Save As MathML – saving
of a document in form of the format Mathematical Markup Language.