- #1
darkp0tat0
- 3
- 0
Any help would be much appreciated - Is it possible to say the following?
If z = g(s+at) + f(s-at), let u = s+at and v=s-at, where a is a constant.
z = g(u) + f(v), [itex]\frac{∂z}{∂u}[/itex] = g'(u), [itex]\frac{∂^{2}z}{∂v∂u}[/itex] = 0?
or can ∂u and ∂v not even exist because it depends on two variables (a and t), which are the same ones as the ones v depends on.
Thanks!
If z = g(s+at) + f(s-at), let u = s+at and v=s-at, where a is a constant.
z = g(u) + f(v), [itex]\frac{∂z}{∂u}[/itex] = g'(u), [itex]\frac{∂^{2}z}{∂v∂u}[/itex] = 0?
or can ∂u and ∂v not even exist because it depends on two variables (a and t), which are the same ones as the ones v depends on.
Thanks!