Can somebody explain this to me?
Find:
$\displaystyle \frac{\partial^2g}{\partial t^2}$
where $\displaystyle g(r,s)$ is an arbitrary function and
$\displaystyle r(x,t)=x+ct$ and $\displaystyle s(x,t)=x-ct$
Can somebody explain this to me?
Find:
$\displaystyle \frac{\partial^2g}{\partial t^2}$
where $\displaystyle g(r,s)$ is an arbitrary function and
$\displaystyle r(x,t)=x+ct$ and $\displaystyle s(x,t)=x-ct$
Since you indicate that you are having trouble with these kinds of derivatives in general, I think it would be best to just link you to this:
http://tutorial.math.lamar.edu/Class...ChainRule.aspx
Your example is a very basic one, so see if you can find the derivative after reading the tutorial.