Hi, so I was wondering if there is any function on the calc that would help in verifying answers - especially for multiple choice questions. ie. 'tanx(1 + sec(2x)) equals:' [and then they give a bunch of answers]
I was using the solve function for most of these 'type' of questions and when it had said 'true' as an answer I assumed LHS =RHS, thereby giving you x is an element of all real numbers. But it didn't work for some, so kinda thinking if anyone has had any leads on attempting these kinda questions on the calc :-\
Also, my calc is the ti-nspire cx model - I've checked the guide on this website, but it didn't have what I was looking for.
On the classpad, there's a judge function which judges if the LHS = RHS. See if the CAS has that.
Alternatively, can use nsolve (adding an "n" in front of solve) to get whole numbers
Do you mean check that 1/x = x^(-1) or something? You can just type it in a calculator page and it'll spit out true if it is.(http://i.imgur.com/I8ZqfGQ.png)
Do you mean check that 1/x = x^(-1) or something? You can just type it in a calculator page and it'll spit out true if it is.
It doesn't work all the time - but I suppose that's the only way we can do it. Especially with the trig questions it's not always entirely guaranteed. eg. tanx (1+ sec(2x)) should be equal to tan(2x) [this was from the back of the book: i don't really know how they got it] but when I put that in the calc it spits out again as it is.