Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Maths ellipse problem?
This question has 2 parts, but I can't solve the 2nd part.
a) Use implicit differentiation to find the derivative in ellipse equation 8x²+4xy+5y²=36
b) The ellipse in part A is centered at the origin and as a consequence its axis lines will have equations of the form y = mx. Now use the fact that the axes of an ellipse are perpendicular to its tangents at intersection, to find the equations of the axes of 8x²+4xy+5y²=36.
Please give your interpretation for the part B, tnx.
1 Answer
- cidyahLv 71 decade agoFavorite Answer
The origin is (0,0)
You have found the slope from part 1.
plug x=0, y=0 into the slope;
Then take its reciprocal and change its sign (slope of the perpendicular line). ----(1)
Equation of the perpendicular line is y-0 = m' (x-0)
y=m' x
where m' is given in (1)
