What is the divergence of the vector field f = 3x^2i + 5xyj + xyz^3kA at the point (1, 2, 3)?

What is the divergence of the vector field f = 3x^2i + 5xyj + xyz^3kA at the point (1, 2, 3)?

Explanation

To find the divergence, calculate:

div(f) = ∂/∂x (3x^2) + ∂/∂y (5xy) + ∂/∂z (xyz^3)

= 6x + 5x + 3xyz^2

At (1, 2, 3):

div(f) = 6(1) + 5(1) + 3(1)(2)(3)^2

= 6 + 5 + 54

= 65