oh the joy of maths homework.

This is a maths problem i just solved and graphed.
I did the picture myself :)One down. 23 more to solve and graph :-\

Good job, Good luck :)
It's about Coordination? Integration?

You know, i have no idea why we are learning this.

Psst.. try wolfram alpha, or matlab. :PThe graphs teach you how to work with quadratic functions, and how you can process them. Later, when you start doing measurements, it might be that you will use this again (actually, I did it for my thesis, in hardware). You need the basics before you can do the advanced stuff.

ah ok.. thanks for the explanation.

AcroneSF · #1This is a maths problem i just solved and graphed.
I did the picture myself :)One down. 23 more to solve and graph :-\

Honestly-if year 10 math screwed me over-how could I understand what this on on about!And I still can't believe I'm a cashier lol!*goes back to short changing customers.Seriously though I suck with math-I have no idea what this one is about-and don't explain I'll run away if I see it :(

Well i'm only 13, so i guess i'm allowed to look in awe at your math. What year is this??

koyuchan · #2Good job, Good luck :)
It's about Coordination? Integration?

Koyu, you must understand that too. It's in the national final test. ;D

I just learned about quadratics last year. 8th grade. But we could use graphing calculators, so I could just tap in the function and check the graph/table for the answers. :P

I need to go refresh my math skills. Been away from that kind of thing for 5 years.. :D

My school starts in 3 weeks and Ihave no idea what are we gonna learn this year :/

Replying to #11

me too,though I'm reviewing what I learned last year so I should be ok :)

Wow I haven't done any math in years - I guessing I still love it cause I have this sudden urge to solve the problem myself!

Was the quadratic formula required by the problem itself, or are you free to use any algebraic technique to obtain the x-intercepts?If it happens to be the latter, you could have just factored your quadratic equation as a product of two quantities.

mds64 · #6Honestly-if year 10 math screwed me over-how could I understand what this on on about!

You should have learned this stuff in year 8 at least :\

Basically, you could have easily factorised the quadratic expression into the form y=(x-2)(x-3). Since y=0 at the x intercepts, the two answers are those two numbers that force the equation to equal zero - 2 and 3.Otherwise, good.

Hypr · #14You should have learned this stuff in year 8 at least :\

I'm a bit more then half way through year 9 and I haven't even started learning that. All this talk of numbers confuses me.

someirishkid · #7Well i'm only 13, so i guess i'm allowed to look in awe at your math. What year is this??

im a 15 year old in grade 10 in Australia. Dont know the equivalent grade in America.

diskjocki · #16I'm a bit more then half way through year 9 and I haven't even started learning that. All this talk of numbers confuses me.

Same except that us just started.Maths in Grade is easy although when I'm lost in track,I don't know what am I doing.

Suiseiseki · #15Basically, you could have easily factorised the quadratic expression into the form y=(x-2)(x-3). Since y=0 at the x intercepts, the two answers are those two numbers that force the equation to equal zero - 2 and 3.Otherwise, good.

It's effective, but I don't like this method. It's more of an insight thing than a computational method. Once you hit fractions it becomes overly complicated. And you can't teach a computer to do this.

Replying to #19

What?!?! What the hell did my calculator just do???