Question

Check: second derivative for : x-y=(x+y)^2

Answer 1

\[\frac{ -4 }{ (2x+2y+1)^2 }\]

Answer 2

not sure if this is correct

Answer 3

did you differentiate implicity

Answer 4

yeah

Answer 5

i did this a few weeks ago don't really remember i know we take the y and make a y prime

Answer 6

the first dirivative would be y'=2(x+y)y' right
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Answer 7

uhm is it -1?