Thanks for your quick reply! I think I get what you mean by ∂u can't exist by itself. Do you think you would be able to take a look at the original equation I posted:
z = g(u) + f(v),
\frac{∂^{2}z}{∂u∂v} = 0
Does that still hold true even when you can't hold v or u constant while...
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), \frac{∂z}{∂u} = g'(u), \frac{∂^{2}z}{∂v∂u} = 0?
or can ∂u and ∂v not even exist because it depends on two variables (a and...
I was thinking about the work-energy theorem today and how it states that:
Wnet = ΔEkinetic
If this is true, then when a ball is moved upward a distance of d, the net work done is equal to zero because there is no change in kinetic energy.
Because: Work = Force x Displacement
for...