Answer  trigonometric equation

10142016, 12:19 AM
Post: #1




Answer  trigonometric equation
Hi. When i try to solve a trigonometric equation. I'm not sure how to receive the answers in terms of pi and n. for example:
solve(sin(x)=0) = {0, pi} but i want receive {n*pi} My firmware is 10637 (29/08/2016) thanks . 

10142016, 04:47 AM
Post: #2




RE: Answer  trigonometric equation
Go into settings and turn off "Principal:"


10142016, 05:05 AM
(This post was last modified: 12062016 11:49 PM by compsystems.)
Post: #3




RE: Answer  trigonometric equation
CAS Settings: Principal Solution: [OFF]
solve( sin(x)= 0, x) ; [enter] returns {n_0*π} // ok but Ans[1](n_0 = 1) not evaluated, Why? . 

10142016, 03:41 PM
Post: #4




RE: Answer  trigonometric equation
(10142016 05:05 AM)compsystems Wrote: CAS Settings: Principal OFF This may be due to the priority of the  (where) operator. The (literal) expression "Ans[1]" does not contain any references to n_0 so that substitution does nothing. After evaluation of Ans[1], you get the unevaluated result because the evaluation of n_0 = 1 happened before the evaluation of Ans[1]. There was an old thread discussing this a while back... Graph 3D  QPI  SolveSys 

10142016, 05:03 PM
Post: #5




RE: Answer  trigonometric equation
You don't need  in CAS,
s:=solve(sin(x)=0); s(1)(n_1=1) 

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