Divergence theorem proof (part 1)

Convergence vs. Divergence | Theorem, Function & Examples

a) Write the divergence theorem. (10P)b) Prove it by using a vector field;D⃗ = r̂ (cosθ)^2 sinθ / r^3which exists in the region between two spherical shells defined by r1 = 5π^2 cm and r2 =25π^2 cm. Solve the question by clearly specifying all formulas and writing all steps ofmathematical operations. (20P)