Maths
Got an exam in two days for maths and havn't revised 
Got 26% in a mock ftw
Anybody good at maths?
http://www.toothill.notts.sch.uk/data/files/dept/maths/ocr_jun08.pdf
If you understand any of them could you explain them etc.
I know like integration/differentiation and SUVAT and thats it
It's FSMQ which is between GCSE and AS btw
Got 26% in a mock ftw
Anybody good at maths?
http://www.toothill.notts.sch.uk/data/files/dept/maths/ocr_jun08.pdf
If you understand any of them could you explain them etc.
I know like integration/differentiation and SUVAT and thats it
It's FSMQ which is between GCSE and AS btw
Comments
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EVERYTHING except what i mentioned i knewGreen_Ranger wrote: »Omg that bring back soo memories.
I remember doing all this in gr9... good times >.>
What do you need explained?
Really bad at the linear/geometry stuff
same i just get As if revise i would have got A* wish i revised nowNever revised for any test, ever.
And I've also never failed one.tomtom12121 wrote: »What you need, i could do it?
Same as to what i said to the power ranger -
That's why I always say life is more important.. Do good in school, you will need everything you learn :cool:
And what Grade are you in because my younger brother was asking me about #7 last week.
I'm in the UK so im in year 11.
Basically you do GCSEs when you're 16 and AS when you're 17 but I done GCSE maths at 15 so I'm doing in between GCSE and AS. -
I guess I'll tacke the line equations if you don't like em. I'm at work and I'm in and out of calls, so give me a moment.What's calculas o.O
I'm meant to know it lol.
All i know is
integration/diffierentation, bionomial expanion/distribution and kinetic stuff.
I'll answer 2,3 and 5 for you (for now) too bad ur good at kinetics, I love physics and I woulda loved to answer all those for ya >.> -
Green_Ranger wrote: »I guess I'll tacke the line equations if you don't like em. I'm at work and I'm in and out of calls, so give me a moment.
I'll answer 2,3 and 5 for you (for now) too bad ur good at kinetics, I love physics and I woulda loved to answer all those for ya >.>
Done 3 already
Things i needs help on are
2,5,7,8,9,11,13
If anybody else can do them -
Ok sry for the delay. here goes number 2
I always found this to be the easiest way. First find slope. m=(y2-y1)/(x2-x1)=(0-8)/(6-0)=-8/6=-4/3 (simplified fraction) or -1 1/3 or -1.33333
then use one of the points to find y intercept. y=mx+b 8=(-4/3)(0)+b, 8=b
You now have line equation in y=mx+b form. (you didnt mention if you needed it in standard, point, slope+point etc)
Next find midpoint of line. Easiest thing evar.
mid= (x1+x2)/2,(y1+y2)/2= (3,4)
perpendicular slope is the negative reciprocal, so 3/4. use midpoint as a point on the line to find new y intercept.
y=3/4x+b
4=3/4(3)+b
4=9/4+b
7/4=b
so perpendicular line equation at midpoint= y=3/4x+7/4
Did this reeeeaaaally fast and didn't proof read. Hope I didn't make any mistakes >.> -
Green_Ranger wrote: »Ok sry for the delay. here goes number 2
I always found this to be the easiest way. First find slope. m=(y2-y1)/(x2-x1)=(0-8)/(6-0)=-8/6=-4/3 (simplified fraction) or -1 1/3 or -1.33333
then use one of the points to find y intercept. y=mx+b 8=(-4/3)(0)+b, 8=b
You now have line equation in y=mx+b form. (you didnt mention if you needed it in standard, point, slope+point etc)
Next find midpoint of line. Easiest thing evar.
mid= (x1+x2)/2,(y1+y2)/2= (3,4)
You no
perpendicular slope is the negative reciprocal, so 3/4. use midpoint as a point on the line to find new y intercept.
y=3/4x+b
4=3/4(3)+b
4=9/4+b
7/4=b
so perpendicular line equation at midpoint= y=3/4x+7/4
Did this reeeeaaaally fast and didn't proof read. Hope I didn't make any mistakes >.>
FDP i understood hardly anything
EDIT:now i do
you made a mistake somewhere though checked markscheme gradient is right y intercept aint
EDIT:wait you got it right
EDIT:i know that to get percundilar line's gradient you to m1xm2=-1 but how do you think the rest for the line. Substition? -
Yea, it's easiest if you substitute a point in, and since you know both lines share the same midpoint, you can use it.FDP i understood hardly anything
EDIT:now i do
you made a mistake somewhere though checked markscheme gradient is right y intercept aint
EDIT:wait you got it right
EDIT:i know that to get percundilar line's gradient you to m1xm2=-1 but how do you think the rest for the line. Substition?
EDIT: Ugh, 5 is derivatives.... I HATE derivatives.... -
What do you do to get acceleration/distance/speed by intergrating/differintiating? I forgot which way it goes.
if you take the area under the curve(integration) of a distance curve, you get the velocity. if you take the integration of velocity you get the acceleration. integration is like anti-differentiation so if you take the derivative(slope) of acceleration you get velocity. if you take the derivative of velocity you get distance...
speed is the absolute value of velocity always... -
if you take the area under the curve(integration) of a distance curve, you get the velocity. if you take the integration of velocity you get the acceleration. integration is like anti-differentiation so if you take the derivative(slope) of acceleration you get velocity. if you take the derivative of velocity you get distance...
speed is the absolute value of velocity always...
No, the derivative of velocity is acceleration. If you integrate velocity you get distance. The derivative of acceleration is change in acceleration, not velocity. I think you may have integral and derivative mixed up. -
[MOD]D34d3y3 wrote: »No, the derivative of velocity is acceleration. If you integrate velocity you get distance. The derivative of acceleration is change in acceleration, not velocity. I think you may have integral and derivative mixed up.
I was trolling -
[MOD]D34d3y3 wrote: »No, the derivative of velocity is acceleration. If you integrate velocity you get distance. The derivative of acceleration is change in acceleration, not velocity. I think you may have integral and derivative mixed up.
So
To get distance you intergrate veloctity
To get veloctiy you intergrate acceleration/differiate distance
To get acceleration you differiate velocity -
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The object of trolling is to **** people off. All you did was make yourself look stupid.
clearly if nobody is helping him and i tell him the exact opposite information, i am making myself looking stupid. i did it on purpose... like i would help a random out on a gaming forum about calculus. psh -
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Hai?Wheres that power ranger =="
=="
I'm having a crabby day on the phones so I'll answer some when I have time >.> Sozzy Hazel, I have the day off tomorrow tho ^^
EDIT: I totally looooove proofs. I just jazzed in my pants from a maths question
*nerd-powers activated* -
Green_Ranger wrote: »Hai?
I'm having a crabby day on the phones so I'll answer some when I have time >.> Sozzy Hazel, I have the day off tomorrow tho ^^
EDIT: I totally looooove proofs. I just jazzed in my pants from a maths question
*nerd-powers activated*
Exam is tomorrow and you're off tomorrow
FML
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