Consider the R - R function (x,y)=x + y +1 (a) Find the Cartesian equation for...

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Consider the R² - R function ƒ(x,y)=x² + y² +1 (a) Find the Cartesian equation for the plane tangent to the graph off at the point where (x, y) = (1,1). (5) (b) Use the Chain Rule to determine (for) (0), where r(t) = (sint,cost), te[-7,7]. (5) [10] Consider the R² - R function ƒ(x,y)=x² + y² +1 (a) Find the Cartesian equation for the plane tangent to the graph off at the point where (x, y) = (1,1). (5) (b) Use the Chain Rule to determine (for) (0), where r(t) = (sint,cost), te[-7,7]. (5) [10]