The question is find dy/dx of . which I rewrote as then, using the chain rule, . But the book gives the answer . Is my answer wrong? Or do I just need to simplify it further?
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Hello, Happy! Find of: . . which I rewrote as: . . . . good! then, using the chain rule, . . . . You dropped a "2" Then they used the identity: .
Oh yes! Thank you, I forgot to "chain" the derivative of the 2x to the rest of the chained derivative.
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