Mathematics - 5 September 2007

2007-09-05 00:26:58 · 9 answers · asked by Anonymous

Find the intercepts and symmetry.
Please teach me how to sketch the graph. is there some website out there that could graph equation like this?

1. x^2 + y^2 - 8z = 8
2. x^2 = (9 - y^2)(9 - z^2)

2007-09-05 00:13:21 · 2 answers · asked by Patricia 2

1) slope 0.5 ,x-intercept is 4
2) slope 2 ; passes through (-5,1)
3) slope - ; passes through (1,3)

2007-09-05 00:09:19 · 3 answers · asked by Paradromer 1

Can you explain to me how to answer this question. Please do it clearly.

1. Find the equation of a sphere having
(5, -3, -2) & (0, 4 , -1) as ends of a diameter.

2. A moving point is always equidistant from the point
(3, 6 , -1) and the plane x = -3. Find the equation its locus.

3. The distance of a moving point from the plane Z = 4 is always half its distance from the point (1, -4, 5). Find the equation of the locus

2007-09-05 00:06:16 · 4 answers · asked by Patricia 2

Sums and differences of cubes??

Factor Completly:

1) 3z^5 - 3z^2

2) a^9 + b^12 c^15

2007-09-05 00:04:01 · 2 answers · asked by Anonymous

I need to evaluate (aka solve) the limit --

[ (square root of 6-x) - 2 ] / [ (square root of 3-x) - 1 ]

as x approaches 2. I've been trying to rationalize the square roots and/or factoring, but I keep getting stuck. I'm pretty sure the limit exists because when I graphed it (note: on my calculator), the (y)value of x approaching 2 came out to around 0.48 or a value less than 1.

2007-09-05 00:00:22 · 2 answers · asked by Christine 1