- #1
Jac8897
- 25
- 0
Homework Statement
state the order and linearity of the diff eq[/SIZE]
(d^2u/dr^2)+(du/dr)+(u)=cos(r+u)
1)the order is the second order. since the highest derivative is 2
2) the term cos(r+u) is not linear therefore this equation is not linear.
is my reasoning for 2) right since the dependent variable is contain in cos(r+u) that makes this non-linear, right?