Nrite an equation of the ellipse with foci at (3, 0) and co-vertices at (0, +_1).

Step-by-step explanation:

Equation of ellipse is

Where h,k is center

A is the length of semi-major axis. This axis include the foci

b is length of semi-minor axis. This axis includes main vertices.

Since we have 0,1 and 0,-1 as co-vertices, the length of the minor axis is 2 so the length of the semi-major is 1.

So we have now,

Next, to since the foci has a y coordinate of 0 and the co-vertrx has a x coordinate of 0, our center is 0,0

so we have

Now, we can do equation

B^2=1

C^2 is 9

S0, we now have

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.