Question: d z d t = d e l z d e l x d x d t + d e l z d e l

dzdt=delzdelxdxdt+delzdelydydt. use this chain rule to find delzdels and delzdelt. z=ln(3x+2y),x=ssint,y=tcoss
d z d t = d e l z d e l x d x d t + d e l z d e l

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