speed to acceleration

[Spatpatia]

Just like i already is? like the on exampel i attached=)?

[ceties]

Sorry but I do not see any attached example with mentioned Vis...

[maurino]

Excuse-me, i have same problem, ie:

i have an array of velocity and i must calculator a acceleration. i have try with a incremental rapport but the result is disastrous.

you hel me, please, i am in the shit.

 and i have the version of labview 7.1

thanks you for the help, in advance