math

additon

100

2+2

4

200

4+4

8

300

6+6

12

400

1+1

2

500

\(\rho \left(\frac{\partial \mathbf{u}}{\partial t}+\mathbf{u}\cdot \nabla \mathbf{u}\right)=-\nabla p+\mu \nabla ^{2}\mathbf{u}+\mathbf{f}\)

0

subtraction

100

230-10

220

200

1000-900

100