Guide to Using the Ti-nspire for METHODS - The simple and the overcomplicated

[Greatness]

A couple more questions with calculator syntax.

How do yuo interpret cosh/sinh or however you spell it? I think it has something to do with expoentials but is there a way that we can take the values and sub it into a formula or what not?
Also same thing goes for the 'sign' thing, when i see that i know we should go to hybrid functions but is there a way aruond that?

[b^3]

A couple more questions with calculator syntax.

How do yuo interpret cosh/sinh or however you spell it? I think it has something to do with expoentials but is there a way that we can take the values and sub it into a formula or what not?
Also same thing goes for the 'sign' thing, when i see that i know we should go to hybrid functions but is there a way aruond that?

Not that I know of (sorry) but someone else here is bound to have an idea.

[nacho]

what about 'sign' ?

[Greatness]

i googled cosh and went to wikipedia: http://en.wikipedia.org/wiki/Hyperbolic_cosine

Not sure if it helps, i didnt really read it tho so if someone picks something up let us know!

[b^3]

e^ix=cos(x)+i*sin(x)
you sometimes get results in r*e^ix form, r is the radius and the x is the angle (I think). To get around getting it in this form. Define cis(theta) the way it does in the guide. Wait that would be in the spesh guide. Wait what are we talking about here?

[Lasercookie]

Is using store to define a function (e.g.):


doing the exact same thing as


It appears to function the same, but I want to make sure that it is actually doing the same thing (it doesn't have any weird behaviors using the store thing?).

[Greatness]

e^ix=cos(x)+i*sin(x)
you sometimes get results in r*e^ix form, r is the radius and the x is the angle (I think). To get around getting it in this form. Define cis(theta) the way it does in the guide. Wait that would be in the spesh guide. Wait what are we talking about here?

Sometimes i get the cosh/sinh when i diff/antidiff weird exponentials, this is in methods as well. Ill post up an example tomorrow!

[jane1234]

e^ix=cos(x)+i*sin(x)
you sometimes get results in r*e^ix form, r is the radius and the x is the angle (I think). To get around getting it in this form. Define cis(theta) the way it does in the guide. Wait that would be in the spesh guide. Wait what are we talking about here?

Sometimes i get the cosh/sinh when i diff/antidiff weird exponentials, this is in methods as well. Ill post up an example tomorrow!

If you want to convert these just go menu > algebra > convert expression > convert to exp. I remember getting some of these cosh/sinh things in methods last year they can be a pain when all you want is a normal exponential!

[Greatness]

e^ix=cos(x)+i*sin(x)
you sometimes get results in r*e^ix form, r is the radius and the x is the angle (I think). To get around getting it in this form. Define cis(theta) the way it does in the guide. Wait that would be in the spesh guide. Wait what are we talking about here?

Sometimes i get the cosh/sinh when i diff/antidiff weird exponentials, this is in methods as well. Ill post up an example tomorrow!

If you want to convert these just go menu > algebra > convert expression > convert to exp. I remember getting some of these cosh/sinh things in methods last year they can be a pain when all you want is a normal exponential!

:O Ive been looking for something like this all year!!!.... THANKS!

Also here's an example if you guys wanted one :

you get an answer of
Using jane's method: we get:

[Greatness]

Ok i've got this:


sign as a function,

Enjoy

[pi]

Ok i've got this:


Enjoy

Bringing back SAC memories


*cries*

[lesch]

Is there anything that you know how to write equations with x= _____? Or circles and stuff...

[b^3]

Is there anything that you know how to write equations with x= _____? Or circles and stuff...

The equations with x= are discussed on the previous page. Or click this link -> Re: Guide to Using the Ti-nspire for METHODS - The simple and the overcomplicated
For circles refer to the spesh guide here -> Guide to Using the Ti-nspire for SPECIALIST – The intricate and tightly packed where it will be right at the bottom of the first post.

[luffy]

Ok i've got this:


Enjoy

Bringing back SAC memories


*cries*

Haha - Our application task has cosh and sinh as well! What a coincidence.

Pretty interesting SAC though.

[b^3]

Just something to add, just in case it comes up and you want to check.

Drawing normal distribution functions.
In the graph bar enter this =normPdf(x,μ,σ)
Where
μ is the mean
σ is the standard deviation.

It graphs the curve for you quite nicely.

EDIT: Courtesy of Gajin.