Solving Trig Equations for a Certain Domain
06-23-2014, 12:34 PM (This post was last modified: 06-23-2014 12:42 PM by Pre.)
Post: #1
 Pre Junior Member Posts: 3 Joined: Jun 2014
Solving Trig Equations for a Certain Domain
I'm not sure how to receive the answers in terms of pi to equations like in the attachment to a certain domain.

With no arguments, the answer (pi*n, ((4*pi*n)-pi)/4) is displayed. But to restrict to an interval like 0 to 2*pi, I can only find this (see picture).

Although the solutions are displayed, they are in numeric form. How can I display the exact answers (0, 3pi/4, pi, 7pi/4) on the calculator?

I am using Rev 6031 on the emulator.
06-23-2014, 02:55 PM
Post: #2
 CR Haeger Member Posts: 275 Joined: Dec 2013
RE: Solving Trig Equations for a Certain Domain
This should work. I used algebraic entry but textbook should work. Remember to purge(x) otherwise the assume(x....) remains.

06-23-2014, 03:57 PM
Post: #3
 Pre Junior Member Posts: 3 Joined: Jun 2014
RE: Solving Trig Equations for a Certain Domain
I didn't know that was there, but it works perfectly.

Couldn't you also use the pipe key, though? The N-Spire does something like that.
06-23-2014, 04:23 PM
Post: #4
 CR Haeger Member Posts: 275 Joined: Dec 2013
RE: Solving Trig Equations for a Certain Domain
Yep you are right, the "where" | works too without having to purge(x) --> thanks!

add solve(tan...)|(x>0 AND x<2*pi)
06-23-2014, 05:17 PM
Post: #5
 Pre Junior Member Posts: 3 Joined: Jun 2014
RE: Solving Trig Equations for a Certain Domain
I tried doing the same before, but I had improper syntax. Thanks for giving me the proper form.
06-24-2014, 10:42 AM (This post was last modified: 06-24-2014 11:04 AM by alexzkter.)
Post: #6
 alexzkter Member Posts: 64 Joined: Apr 2014
RE: Solving Trig Equations for a Certain Domain
How exactly can I find the pipe symbol ?
Thanks

Edit: Found it, on Chars, the 124th.
06-24-2014, 11:59 AM
Post: #7
 CR Haeger Member Posts: 275 Joined: Dec 2013
RE: Solving Trig Equations for a Certain Domain
(06-24-2014 10:42 AM)alexzkter Wrote:  How exactly can I find the pipe symbol ?
Thanks

Edit: Found it, on Chars, the 124th.

Also check math template key. Easier.
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