Mathematics: Post your doubts here!

[Copy Cat]

1st part only. Can u tell me answer of the second?

View attachment 60467

Spoiler

View attachment 60469

Edit! :
Once you have k=4/3, you can just proceed directly to tan-1(4/3) = 0.927

Thanks a ton!!!!!!!!

 

[Awesome12]

Oh ok, I didn't visualize it as being the equation of the line. Thanks.

 

[farhan141]

Spoiler

View attachment 60469

Edit! :
Once you have k=4/3, you can just proceed directly to tan-1(4/3) = 0.927

Where did u disappear in last few days

 

[Copy Cat]

 

[The Sarcastic Retard]

Part (ii)

Spiceangel The Sarcastic Retard muhammadali233 farhan141 qwertypoiu Awesome12 *Le me* Akshajistari

http://bmaths.weebly.com/uploads/2/5/6/4/25647388/s1_revision_pack_4_-_probability_distributions.pdf Q13

 

[Copy Cat]

I only need the first part.
p<Z<q?

Thanks

 

[qwertypoiu]

View attachment 60470

Spoiler

 

[Fiery987]

Ohh got it! Thanks man .

How's ur prep overall? How is S1 going? What abt Physics and Chem?

60 - 70 %. Chemistry is OK. Math P3 needs some practice. I rock in Physics but I was never good in Statistics (S1 in this case) .

How about you?

 

[qwertypoiu]

View attachment 60473
I only need the first part.
p<Z<q?

Thanks

Is this the entire question? Seems like it's missing something

 

[qwertypoiu]

Where did u disappear in last few days

Just brushing on my bio man :/

 

[Copy Cat]

Spoiler

View attachment 60474

y=-x+2-----Equation of line
How did you managed to get the other co-ordinates?
(2,0) And?

Thanks is advance...........

 

[Copy Cat]

Is this the entire question? Seems like it's missing something

b(ii) part

 

[qwertypoiu]

y=-x+2-----Equation of line
How did you managed to get the other co-ordinates?
(2,0) And?

Thanks is advance...........

Consider arg(z) = 3/4*pi
This represents the set of points whose argument is 3/4*pi. In other words, this is a line which makes the angle 3/4*pi radians with the x axes (in anticlockwise direction).
By doing tan(3/4*pi), we can find the gradient of the line, which is -1. So our equation is y=-x (passes through origin)
Changing arg(z) to arg(z-2) has the effect of shifting all the points to the right by 2 units, so now our equation becomes y=-x+2

 

[qwertypoiu]

View attachment 60475
b(ii) part

So basically you have a set of points that form a circle, with centre (4,4) and radius 2.
The distance from Origin to Centre = √(4²+4²) = 5.66
p = Ans - 2 = 3.66
q = Ans + 2 = 5.66

 

[Fiery987]

So basically you have a set of points that form a circle, with centre (4,4) and radius 2.
The distance from Origin to Centre = √(4²+4²) = 5.66
p = Ans - 2 = 3.66
q = Ans + 2 = 5.66

Shouldn't it be √(6²+6²) for q and likewise for p?
And what about 'arg' part?

 

[qwertypoiu]

Shouldn't it be √(6²+6²) for q and likewise for p?
And what about 'arg' part?

The questioner didn't ask about the arg part but if you want I'll do it tomorrow

 

[Copy Cat]

Consider arg(z) = 3/4*pi
This represents the set of points whose argument is 3/4*pi. In other words, this is a line which makes the angle 3/4*pi radians with the x axes (in anticlockwise direction).
By doing tan(3/4*pi), we can find the gradient of the line, which is -1. So our equation is y=-x (passes through origin)
Changing arg(z) to arg(z-2) has the effect of shifting all the points to the right by 2 units, so now our equation becomes y=-x+2

So basically you have a set of points that form a circle, with centre (4,4) and radius 2.
The distance from Origin to Centre = √(4²+4²) = 5.66
p = Ans - 2 = 3.66
q = Ans + 2 = 5.66

Wow!!!!!

Thanks a bunch............

 

[farhan141]

So basically you have a set of points that form a circle, with centre (4,4) and radius 2.
The distance from Origin to Centre = √(4²+4²) = 5.66
p = Ans - 2 = 3.66
q = Ans + 2 = 5.66

Can u do alpha and beta of this? I pasted this few days back but u disappeared and no one solved it... I'll quote all the problems in a few min, can u do them today or tmrw?

 

[farhan141]

Yea he is a magician

 

[farhan141]

60 - 70 %. Chemistry is OK. Math P3 needs some practice. I rock in Physics but I was never good in Statistics (S1 in this case) .

How about you?

Done with P3 and just normal distribution left in S1. Physics is also almost done just P5 practice left. But almost whole chemistry is left.... Even the course..