• Best of luck to the class of 2019 for their HSC exams. You got this!
    Let us know your thoughts on the HSC exams here
  • Like us on facebook here

Need Help in Mathematics 2U... (1 Viewer)

SK2010

Member
Joined
Jul 5, 2009
Messages
45
Location
The Hills
Gender
Female
HSC
2010
Hey guys and girls out there just wondering if you can help me on the following topics:
- Quadratic Function
- Locus and Parabola
- Calculus
Yeah so if you could send me word documents about these topics or questions I can do I would very much like that....
Thanx

Oh and also questions relating tangents

♥♥♥

IF anyone could anwser the following I would appreciate it:

Question:

The equation of a circle whose centre is x^2 + y^2 + 4x - 2y - 20 = 0
Find:

(a) the length of the tangent to this cirlce form the point (5,2),

(b) the length of the intercept on the Y-axis

Note: This symbos ^ means to the power of
♥♥♥

This is what I tried doing:

(x + 2)^2 + (y - 1)^2 = 20 + (2)^2 + (-1)^2

(x + 2)^2 + (y - 1)^2 = 25

Therefore x = -2, y = 1, the radius is 5 (25 ^1/2 = 5)

And now I am stuck...
 

shady145

Banned
Joined
Dec 4, 2008
Messages
1,690
Gender
Female
HSC
2014
Hey guys and girls out there just wondering if you can help me on the following topics:
- Quadratic Function
- Locus and Parabola
- Calculus
Yeah so if you could send me word documents about these topics or questions I can do I would very much like that....
Thanx

Oh and also questions relating tangents

♥♥♥
www.mathsonline.com.au i thinks thats it... questions on every topic as far as i know and tells you how to do it aswell...
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top