[CIE] All Pure Mathematics (P1, P2 and P3) doubts here !

[Tohru Kyo Sohma]

ok its like this;
y^2=12x intersects 3y=4x+6 at two points.
bring 3 to the other side and the formula becomes y=4/3x+2
now put this formula in the other formula [4/3x+2]^2=12x
simplify and get x and y values
x1=3 and y1=6
x2=3/4 and y2=3
distance between 2 points is=root of [((3/4)-3)^2+(3-6)^2]
and the answer is 3.75
hope u get it!!
ask me again if u dont understand!

[perish007]

please do Q10, iii may/june 2011 32

[S.M.A.T]

please do Q10, iii may/june 2011 32

dy/dx=(2xe^-x)-((x^2)(e^-x)) from part ii


let the tangent be y=mx

At point of intersection,

mx=(x^2)(e^-x)
after solving
m=0 or m=x(e^-x)

m=(dy/dx)
therefore,
x(e^-x)=(2xe^-x)-((x^2)(e^-x))
after solving,x=1

I think there is a short method which I don't now 

[curiousguy]

1. Show that the triangle formed by the points (-3,-2), (2,-7) and (-2,5) is isosceles.
2. Show that the points (7,12), (-3,-12), and (14,-5) lie on a circle with centre (2,0).

Please any one help me it s really urgent

[Arthur Bon Zavi]

1. Show that the triangle formed by the points (-3,-2), (2,-7) and (-2,5) is isosceles.

Using the distance formula, sq. rt [(x₂-x₁)² + (y₂-y₁)²] and confirm that all the sides are equal in length.

2. Show that the points (7,12), (-3,-12), and (14,-5) lie on a circle with centre (2,0).

O = (2,0); A = (7,12); B = (-3,-12); C = (14,-5), then:
OA=OB=OC
Use the distance formula again to verify.

[curiousguy]

Guys its like in IGCSE i wasnt having this additional maths, pure maths and all when i was in the middle east. But now when i came in my country and started a-levels, people say they have all the basics in p1. So my request to u guys is my questions may be easy in ur sight, but if u guys actually help me out to gain proper concept in p1 i wud really appreciate it.
Thank u in advance

[Arthur Bon Zavi]

Guys its like in IGCSE i wasnt having this additional maths, pure maths and all when i was in the middle east. But now when i came in my country and started a-levels, people say they have all the basics in p1. So my request to u guys is my questions may be easy in ur sight, but if u guys actually help me out to gain proper concept in p1 i wud really appreciate it.
Thank u in advance

I am doing the first one, with it you can work on the rest.

2x² + 8x - 10
2(x² + 4x - 5)
2(x² + 4x + 4 - 9)
2(x + 2)² - 18 ----> (ax + b)² + c

[curiousguy]

Day after 2morrow is my class test on p1 1st chapter coordinates,points and lines. Please post as many typical questions along with answers that i may get in common.wud appreciate any help(__)

[Arthur Bon Zavi]

Day after 2morrow is my class test on p1 1st chapter coordinates,points and lines. Please post as many typical questions along with answers that i may get in common.wud appreciate any help(__)

Did you understand the previous sum I solved ?

[curiousguy]

Yes its easy u know. But try poting some typical questions and answers from the 1st chapter i need to prepare my test 2omorrow

[Arthur Bon Zavi]

Yes its easy u know. But try poting some typical questions and answers from the 1st chapter i need to prepare my test 2omorrow

Do you use this book ?

Try solving the miscellaneous exercise. That's all.

[curiousguy]

Yes i have it! If u have done them please scan and post it here. If that is also not possible kindly do 4,5,6,7 sums as soon as possible.

[Arthur Bon Zavi]

Yes i have it! If u have done them please scan and post it here. If that is also not possible kindly do 4,5,6,7 sums as soon as possible.

To be honest, I never did any of the exercises from the book seriously. I just read all the chapters and examples. In the end, I solved all the past papers with variants.

Miscellaneous exercise from the first chapter or the fourth ?

[astarmathsandphysics]

i don't have the book. can only answer if you post the questions

[cs]

i couldnt get the answer, please help if possible tyvm