Mathematics Question Thread

[jakesilove]

Must be a pretty dodgy teacher if ur not allowed to ask them questions

You got that right, surely that's just their entire job?

[RuiAce]

Must be a pretty dodgy teacher if ur not allowed to ask them questions

You got that right, surely that's just their entire job?

Yep. People like them should be fired.

[itswags98]

Yep. People like them should be fired.

I thank the moon, stars and whatever the hell else is up there that i have the best maths teacher ever who puts in so much effort for her students. 
The difference between teachers can really make or break a subject IMO

[jamonwindeyer]

I thank the moon, stars and whatever the hell else is up there that i have the best maths teacher ever who puts in so much effort for her students. 
The difference between teachers can really make or break a subject IMO

Absolutely this. And the thing is, it's not just intelligence. I've had lecturers who were absolute wizards, knew their shit like absolutely nothing I've ever seen, but I still didn't like them as a lecturer. Then I have had tutors who know their course content really well and not too much beyond that, but holy crap they just knew how to explain it!! Being able to explain something well is just so important, something which I fear is overlooked in favour of pure academic skill.

The best teachers in my experience are the ones who love their job, because it shows 

[RuiAce]

I thank the moon, stars and whatever the hell else is up there that i have the best maths teacher ever who puts in so much effort for her students. 
The difference between teachers can really make or break a subject IMO

My MX2 teacher did a Ph. D in some field of pure mathematics.

His explanations were pretty much otherworldly. Maths was magic.

[conic curve]

How do I find the domain of y=(3-x)?

I want to do it without inspection

Also how do I answer people's maths questions if I were to answer them?

[conic curve]

Let me retype my question above

How do I find the domain of y=(3-x)squareroot of x

Also how do I type up maths questions on this forum?

[jakesilove]

Let me retype my question above

How do I find the domain of y=(3-x)squareroot of x

Also how do I type up maths questions on this forum?

Hey! So first, I'll answer your Maths question. To find the domain of



We just need to consider which values of x are essentially 'not allowed'. Generally, to do this we just set whatever is in the square root to be greater than zero (noting that the square root of a negative number does not exist!). So, this one turns out the be easy; the (3-x) bit doesn't do anything, but the square root of x means that x must be greater than 0! In maths;



Not too difficult!

Now, to answer your second question, you started on the right track (using the LaTeX button in the toolbar). However, various functions have various codes attributable to them. Check out Rui's incredible guide HERE to find out how to use it! I'm pretty shit at it, but Rui and Jamon are pros.

Jake

[jakesilove]

 

How do I find the domain of y=(3-x)?

I want to do it without inspection

Also how do I answer people's maths questions if I were to answer them?

It's great to here that you want to answer maths questions! When you see something you want to take a crack at, just hit "reply" on their post, and type out a response. You can hand write an answer and attach it using the mona lisa button in the toolbar (you'll need to upload the image to Imgr, as you need a hyperlink, but that doesn't take too long) or use LaTeX to type using maths, as I've explained above!

Looking forward to seeing more of you on the forum

Jake

[conic curve]

It's great to here that you want to answer maths questions! When you see something you want to take a crack at, just hit "reply" on their post, and type out a response. You can hand write an answer and attach it using the mona lisa button in the toolbar (you'll need to upload the image to Imgr, as you need a hyperlink, but that doesn't take too long) or use LaTeX to type using maths, as I've explained above!

Looking forward to seeing more of you on the forum

Jake

Thanks Jake

[conic curve]

Hey! So first, I'll answer your Maths question. To find the domain of



We just need to consider which values of x are essentially 'not allowed'. Generally, to do this we just set whatever is in the square root to be greater than zero (noting that the square root of a negative number does not exist!). So, this one turns out the be easy; the (3-x) bit doesn't do anything, but the square root of x means that x must be greater than 0! In maths;



Not too difficult!

Now, to answer your second question, you started on the right track (using the LaTeX button in the toolbar). However, various functions have various codes attributable to them. Check out Rui's incredible guide HERE to find out how to use it! I'm pretty shit at it, but Rui and Jamon are pros.

Jake

Once again thanks

So basically (3-x) has no effect on the domain? If so why?

[jamonwindeyer]

Once again thanks

So basically (3-x) has no effect on the domain? If so why?

Precisely! Because 3-x has no restrictions, we can put anything into it and it makes sense. It's only the square root term that causes issues (think Math error on your calculator) 

[conic curve]

Precisely! Because 3-x has no restrictions, we can put anything into it and it makes sense. It's only the square root term that causes issues (think Math error on your calculator) 

Thanks Jamon

[itswags98]

Absolutely this. And the thing is, it's not just intelligence. I've had lecturers who were absolute wizards, knew their shit like absolutely nothing I've ever seen, but I still didn't like them as a lecturer. Then I have had tutors who know their course content really well and not too much beyond that, but holy crap they just knew how to explain it!! Being able to explain something well is just so important, something which I fear is overlooked in favour of pure academic skill.

The best teachers in my experience are the ones who love their job, because it shows 

Theres that famous saying that goes along the lines of "If you cant explain it to a 6 year old in simple terms, you don't know it well enough" ahah

[RuiAce]

Theres that famous saying that goes along the lines of "If you cant explain it to a 6 year old in simple terms, you don't know it well enough" ahah

Try explaining linear algebra to a 6 year old