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Mathematics 13 Online
OpenStudy (anonymous):

loook at the picture please to help

OpenStudy (anonymous):

OpenStudy (anonymous):

which one?

OpenStudy (anonymous):

either one please!

OpenStudy (anonymous):

take the derivative implicitly first one gives \[2x+2yy'=0\] making \[y'=-\frac{x}{y}\] substitute the numbers to find the slope

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