- #1

ponjavic

- 225

- 0

## Homework Statement

1a) Confirm that grad dot (y x sigma) = y x grad dot sigma + grad*sigma x sigma

where y is a vector and sigma a second order tensor

## Homework Equations

(a x b)_i = e_ipq a_p b_q

(A x B)_i = e_ipq A_pl B_ql

(a x B)_ij = e_ipq a_p B_qj

(caps are tensors)

## The Attempt at a Solution

I get:

e_ipq y_p sigma_qj = e_ipq y_p sigma_qj,j + e_ipq y_p,l sigma_ql

if it is correct I'm not quite sure how to add the third and second term together