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OpenStudy (anonymous):
How do you derive the function f(x,y) = ln(x² + sqrt(x²+y²)? fx'(x,y) = 1/sqrt(x²+y²) but why?
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OpenStudy (anonymous):
yepp
OpenStudy (anonymous):
chain rule
OpenStudy (anonymous):
\[f_x(x,y)?\]
OpenStudy (anonymous):
gah i hate paint lol
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