x 2 + 3 x y + y 3 = 10 2 x + 3 x y ′ + 3 y + 2 y y ′ = 0 ( 2 x + 3 y ) + ( 3 x y ′ + 2 y y ′ ) = 0 2 x + 3 y + ( 3 x + 2 y ) y ′ = 0 ( 3 x + 2 y ) y ′ = − 2 x − 3 y / : ( 3 x + 2 y ) y ′ = 3 x + 2 y − 2 x − 3 y
https://tex.z-dn.net/?f=x%5E2%2B3xy%2By%5E3%3D10%5C%5C2x%2B3xy%27%2B3y%2B2yy%27%3D0%5C%5C%282x%2B3y%29%2B%283xy%27%2B2yy%27%29%3D0%5C%5C2x%2B3y%2B%283x%2B2y%29y%27%3D0%5C%5C%283x%2B2y%29y%27%3D-2x-3y%5C%20%2F%5C%20%3A%5C%20%283x%2B2y%29%5C%5Cy%27%3D%5Cfrac%7B-2x-3y%7D%7B3x%2B2y%7D ;
To find d x d y for the equation x 2 + 3 x y + y 3 = 10 , first differentiate both sides implicitly. After applying the rules of differentiation and rearranging, the result is d x d y = 3 ( x + y 2 ) − 2 x − 3 y .
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