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 ▼ bluesun08 Unregistered Posts: 207 Threads: 48 Joined: Feb 2010 11-09-2013, 10:39 AM i'm interested in the "slope" command. After pressing the help-key the calculator show the following syntax: slope(Line| |Pnt| |Cplx,[Pnt| |Cplx]) How can i read the symbols | [ ? What means that? How can i use the command? The example in the Help-menu is not very instructive for me. ▼ Michael de Estrada Unregistered Posts: 1,665 Threads: 142 Joined: Jan 2009 11-09-2013, 11:01 AM The square brackets [] just mean that entry is optional. The Where symbol | is available in the Catlg list in the Toolbox. ▼ Joe Horn Unregistered Posts: 153 Threads: 7 Joined: Jun 2008 11-09-2013, 11:42 AM Quote: The square brackets [] just mean that entry is optional. The Where symbol | is available in the Catlg list in the Toolbox. "||" in a syntax is not the Where function (nor absolute value); it means "OR". Example: row(Mtrx(A),Intg(n)||Interval(n1..n2)) means there are two options: (1) row(Matrix, Integer) (2) row(Matrix, Interval) ▼ Michael de Estrada Unregistered Posts: 1,665 Threads: 142 Joined: Jan 2009 11-09-2013, 12:02 PM Thanks for the correction. ▼ bluesun08 Unregistered Posts: 207 Threads: 48 Joined: Feb 2010 11-09-2013, 02:28 PM O.k. but now i have the next problem: When i imput "slope(line(y=2*x-3))" the calculator shows an error message. why? ▼ toml_12953 Unregistered Posts: 22 Threads: 5 Joined: Oct 2010 11-09-2013, 10:38 PM Have you tried it in CAS mode? it works for me. Tom L ▼ bluesun08 Unregistered Posts: 207 Threads: 48 Joined: Feb 2010 11-10-2013, 11:57 AM o.k. thank you. it works also for me in cas. But for heaven's sake (or what the hell) do i know if i can use an app function only in home-view or only in cas-view or in both views?

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