Please help me write the formula

[drex]

Hello,
I need to formulate the follow relationship in proper math symbols:

Differential in A (last days value minus today's) has a tendency to reach the Differential in B (today's)

I though this could be expressed with

AΔ -> BΔ

BUt I guess there are more elegant and mathematically correct ways to do this

thank you!
Dave

[LucMeekes]

I'd guess:

Success!
Luc

[drex]

Thank you very much Luc - looks great!)))

Can you also help me understand what the following type of equation means:

f:= a → b

[LucMeekes]

In Mathcad?

Well, you can get it in the following manner:

b is assigned 1 (numerically) then it is undefined for the symbolic processor of Mathcad.

Then a is assigned the value of b.

And finally f is assigned a, with a symbolic evaluation. That reveals that a is actually b, and hence f is effectively assigned b.

QEE

Success!
Luc

[drex]

Alec - I think I need to modify the formula -actually I need to express that

magnitude of Differential in A is DIRECTLY PROPORTIONAL TO Differential in B

The time span is only one day (each day) so the time cannot go on till eternity:)

Can you help me with this?

[LucMeekes]

Let's give it a try. How about:

Success!
Luc