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Author Topic: How to display an equation the way I want  (Read 7985 times)

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Offline Andre

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How to display an equation the way I want
« on: April 10, 2011, 07:29:07 am »
Is there any way to display an equation the way I want, instead of the way my nspire wants?

For example:



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« Last Edit: April 10, 2011, 07:30:03 am by Andre »
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Offline ZippyDee

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Re: How to display an equation the way I want
« Reply #1 on: April 10, 2011, 07:29:40 am »
the image is not showing
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Offline Andre

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Re: How to display an equation the way I want
« Reply #2 on: April 10, 2011, 07:30:23 am »
Fixed the img link
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Offline Munchor

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Re: How to display an equation the way I want
« Reply #3 on: April 10, 2011, 07:31:36 am »
Quote from: Andre on April 10, 2011, 07:29:07 am
Is there any way to display an equation the way I want, instead of the way my nspire wants?

For example:



Uploaded with ImageShack.us

What do you mean? I have no problems with that, I love MathPrint.
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Offline Andre

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Re: How to display an equation the way I want
« Reply #4 on: April 10, 2011, 07:34:23 am »
The equation on the left is the one that I want to be displayed, just like that, but the nspire always "simplifies" to the one one the right
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Ashbad

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Re: How to display an equation the way I want
« Reply #5 on: April 10, 2011, 08:23:03 am »
Well most likely it is being simplified like that is because most CAS systems won't put things under a root in the top of a fraction (since it's not officially correct that way) -- so really, it's helping you answer an extra step ;)
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Offline Andre

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Re: How to display an equation the way I want
« Reply #6 on: April 10, 2011, 08:30:05 am »
What if I dont want that help?

That was just an example, but I have huge equations that I need them to be displayed just the way I enter them. Is that possible?



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Ashbad

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Re: How to display an equation the way I want
« Reply #7 on: April 10, 2011, 08:37:24 am »
Well, one thing you can try is to group parts you want together in parenthesis, which might trick it into thinking it needs to show your equation first.

If that doesn't work, then I don't know -- but someone more familiarized with the Nspire might.
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Offline apcalc

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Re: How to display an equation the way I want
« Reply #8 on: April 10, 2011, 08:44:58 am »
As far as I know, I do not think that this is possible to do. :(

In some math, rationalizing the numerator as opposed to the denominator can be favorable.  I guess the CAS is going on this route before returning its answer.
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Offline Andre

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Re: How to display an equation the way I want
« Reply #9 on: April 10, 2011, 08:59:03 am »
Well if I create a Note and enter my equation in a mathbox it will be displayed the way I want (without evaluating it)



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I want to be able to this but not in the Note page.
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Offline Deep Toaster

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Re: How to display an equation the way I want
« Reply #10 on: April 10, 2011, 12:11:20 pm »
Quote from: Ashbad on April 10, 2011, 08:23:03 am
Well most likely it is being simplified like that is because most CAS systems won't put things under a root in the top of a fraction (since it's not officially correct that way) -- so really, it's helping you answer an extra step ;)

It's actually been traditionally more correct to leave the root in the numerator instead, but I guess calculators don't need that anymore.
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Offline Runer112

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Re: How to display an equation the way I want
« Reply #11 on: April 10, 2011, 12:59:03 pm »
I believe the reason the root is ending up in the denominator is simply because it's combining like terms. The √X in the numberator is being combined with the X in the denominator, giving √X in the denominator. I could be wrong, but that's my hypothesis at least.
« Last Edit: April 10, 2011, 12:59:51 pm by Runer112 »
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Offline Deep Toaster

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Re: How to display an equation the way I want
« Reply #12 on: April 10, 2011, 01:14:59 pm »
It's a valid simplification, but I don't think there's a valid way to keep it unsimplified, unfortunately. Maybe as a string?
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Offline jnesselr

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Re: How to display an equation the way I want
« Reply #13 on: April 10, 2011, 01:27:24 pm »
Yeah, it's just multiplying by sqrt(x)/sqrt(x) to get the x terms to cancel and get sqrt(x) in the bottom.  I would try parenthesis or something.
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Offline Andre

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Re: How to display an equation the way I want
« Reply #14 on: April 10, 2011, 01:41:12 pm »
parenthesis dont work because nspire just deletes useless parenthesis.
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