Section 14.4: Tangent Planes
Exercise 31
If \(z = 5x^2 + y^2\) and \((x, y)\) changes from \((1, 2)\) to \((1.05, 2.1)\), compare the values of \(\Delta z\) and \(dz\).
If \(z = 5x^2 + y^2\) and \((x, y)\) changes from \((1, 2)\) to \((1.05, 2.1)\), compare the values of \(\Delta z\) and \(dz\).