13. Use the differential df at(5,2) to approximate the change in f(x,y) = x² + 3xy’as...

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math calculus

Answer 1

Answer #1

fay) = x²43442 (512) ox=5.01-5=0.01 fx = 2x+34 2 Dy = 1-98-2=-0.02 at (512) fx = 2(5)+3(2)² = 22 fy= 076xy bay fy=615) (2) =

Answer 2

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