change of number over time

[Former Member]

is there any standard FM to calculate change of number over time .

where Z is my number.i have to find change of Z over a time period.

i.e I have to find dZ.

Any idea.

Thanks in advance.

Message was edited by:

Maya Vinothini

[Former Member]

any idea to solve this issue..

Thanks..

[Former Member]

DZ = Z2 - Z1???

Rob

[JozsefSzikszai]

can you be a bit more specifi? what number? how does it change?

[Former Member]

Do u mean the differenciation operation??

if yes try to do this way.

do 10000 times.

• calculate the change over the dependent variable in small intervals.

• of independent variable.

dz = dz+ (d2-d1 ) " accumulate values

enddo.

dz = dz/10000. " divide by the number of times.

[Former Member]

thanks i will try