- Fri May 01, 2009 12:04 am
- Forum: Advanced Algebra ("pre-calculus")
- Topic: The point where the medians of triangle meet
- Replies:
**2** - Views:
**1232**

Thank a lot, you guy! Thankful!

- Fri May 01, 2009 12:02 am
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Domain and range of quadratic function y = x^2 + 6x + 7
- Replies:
**2** - Views:
**31378**

Thanks a lot! This is a splendid website! ^^

- Thu Apr 30, 2009 3:18 am
- Forum: Advanced Algebra ("pre-calculus")
- Topic: The point where the medians of triangle meet
- Replies:
**2** - Views:
**1232**

EX : A(8, -2) , B(1,5) and C(4, -5) are vertices of triangle ABC.

We knew the equations of the three medians of this triangle are y = -0.36x + 0.9 , y = -1.7x + 6.7 , y = 13x - 57

How can i locate the point where the medians meet ?

Thanks a lot!

We knew the equations of the three medians of this triangle are y = -0.36x + 0.9 , y = -1.7x + 6.7 , y = 13x - 57

How can i locate the point where the medians meet ?

Thanks a lot!

- Thu Apr 30, 2009 3:14 am
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Domain and range of quadratic function y = x^2 + 6x + 7
- Replies:
**2** - Views:
**31378**

What are the domain and range of quadratic function ?

Ex : Find the domain and range of y = x^2 + 6x + 7

Thanks!

Ex : Find the domain and range of y = x^2 + 6x + 7

Thanks!

- Sun Apr 26, 2009 11:37 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Collinear and non-collinear points
- Replies:
**2** - Views:
**2738**

Thank a lot!

- Sun Apr 26, 2009 6:43 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Collinear and non-collinear points
- Replies:
**2** - Views:
**2738**

Please, tell me what is the word "collinear points" and "non-collinear points" ? And with 3 non-collinear points as vertices, how many different triangles can i draw ? If given a choice of 4 points, no three of which are collinear, how many different triangles can i draw ? THANKS!

- Thu Apr 23, 2009 11:20 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Polynomial functions: finding equation from graph, etc.
- Replies:
**5** - Views:
**5002**

Here is the answer for my problem : 1/ We have x - intercept is only -4 , that means the vertex of this function's graph will be (-4, 0), and this x-intercept or this zero will be Double root. As the theme, this polynomial function is a quadratic one, so it has two "square" (two zeros) or ...

- Thu Apr 23, 2009 10:50 pm
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Finding solutions for 5th-degree polynomial functions
- Replies:
**4** - Views:
**4892**

Thank you, guy a lot! Here is some steps that i did : We have y = x^5 - 6x^2 + 11x - 6 1st :Using calculator to find the visible x-intercepts by looking at the graph, we will see that this function has 3 x-intercepts, 1, 2, 3 Or (x-1)(x-2)(x-3) = x^3 - 6x^2 + 11x - 6 2nd :But we know that this is th...

- Thu Apr 23, 2009 12:09 am
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Polynomial functions: finding equation from graph, etc.
- Replies:
**5** - Views:
**5002**

- Wed Apr 22, 2009 2:13 am
- Forum: Advanced Algebra ("pre-calculus")
- Topic: Finding solutions for 5th-degree polynomial functions
- Replies:
**4** - Views:
**4892**

Please help me to solve this function : y = x^5 - 6x^4 + 20x^3 - 60x^2 + 99x - 54

I know the answer are x = 1, x = 2, x = 3, x = 3i, x = -3i . Thanks!

I know the answer are x = 1, x = 2, x = 3, x = 3i, x = -3i . Thanks!