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I'm starting to get the hang of exponent laws and such, but I'm not quite sure if my answers are correct.
If anyone could take the time to walk me through the first one, and verify the other two, I'd really appreciate it (:
(z^6z^2z^-11)^4 ÷ z^-13
-28a^6b^-3c^5 ÷ 7a^11b^-5c^5
= -4a^-5b^2
(-2ab^7)^3 ÷ (- a^4b^2)^5
= 8a^-17b^11
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hi jessthedinosaur
Yes, second and third are ok. It's very hard to show powers like this. It'll be worth it to learn a bit of LaTex. It's a code for making maths look right on screen. I'll try to put your first one into LaTex to show what I mean.
It's done by starting with square brackets math and ending with square brackets /math. In between you put your expression.
Here's yours without the leading square bracket
math]\frac{(z^6z^2z^{-11})^4}{ z^{-13}} [/math]
Notice how you have to put extra curly brackets around the negative and two digit powers because, otherwise you don't get the power correct.
On the maths help link there's a post which shows you loads more about LaTex.
Anyway, back to the problem:
step (i) Simplify the insides of the top bracket
Then raise to power 4
Then, finally, sort out the division
Hope that helps
Bob
Last edited by Bob (2011-02-16 12:01:43)
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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Hi all,
For LaTeX, you can use online LaTeX equation editors.
e.g. : http://www.codecogs.com/latex/eqneditor.php
So you can accurately know what you need
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
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Hi gAr;
That is what I use! Nice pull down menus and no software to download to your machine.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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Hi bobbym,
Yes, you're right. Offline installations which I have seen are big, so online editors are good for the purpose!
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
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Noy only are they big, they are dangerous. Poorly written software can smash your machine. I have seen numerous cases of that.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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Oh, is it? I didn't know that.
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
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Sometimes they are infected and sometimes they just are bad. Granted it does not happen often, first time I saw it was with a text editor called Jarte 105. My machine went down like it was shot in the head. Another time it was with Avast's update.
Like I said it does not happen often but when it does you wish you had not run that software. A online editor is much safer.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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I see many recommending Lyx.
Have you tried it? From the screenshots, I see the interface is similar to the online editor.
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
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Hi;
No, I have not tried it yet. I am happy with codecogs.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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Okay, just asked.
I'm also happy with codecogs.
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
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It is amazing that someone else even knows about it.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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Actually, it's first search result on google, when we search "latex online"
"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense" - Buddha?
"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."
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I used "online latex editor," but apparently not a whole lot of people got that idea...
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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Hi Bobby & gAr,
I was new to Latex before I joined MIF, but Bobby gave me the codecogs link and I've been using it ever since. I found it very easy to use, and it makes my work so much easier to read than plain text.
"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson
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hi guys,
Aaarrrhhh! So that's how you do it. I've been writing my own code all this time. Thanks, I'll give it a try.
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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