Divide it by 25 witch is the height then find the square root
What is x? 90+7x+1+9x-7=180
2 answers:
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The answer is (-2,-4)
Checking the answers is under the pink bar.
Checking the answers is under the pink bar.
The correct answer is C.
The limit in A does exist:
The limit in B also exists: for any ,
But this alone does not prove the 2D limit exists. only captures all the paths through the origin that are straight lines.
The limit in C also exists, but it's not the same as either of the limits along the paths used in A and B.
That this value is non-zero tells us the original limit does not exist.
The claim in D is generally not correct. That is undefined does not automatically mean the limit doesn't exist. A simpler example:
yet is undefined.