Each of the following functions has a maximal domain on which it is continuous and that domain has a boundary. Match the verbal description of this boundary with the function by putting the letter corresponding to the function.1. f(x, y,z)=1x2+y2+z22. f(x, y)=xln(y)3. f(x, y)=14−x2−y24. f(x, y,z)=xyzx2+y2−z5. f(x, y,z)=z1−x2−y2A. one pointB. a straight lineC. a circular paraboloidD. a circleE. a circular cylinder

answer: what

step-by-step explanation:

i will pick c put check it over to be sure

step-by-step explanation:

its kind of blurry. can you put a clearer pic?

step-by-step explanation:

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

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