Hello everybody!
I am new to the Forum. I am using SMath Studio from time to time and today I have faced a strange problem. I have entered following parameters and equation:


When I calculate the result manually I receive: 71,54 MPa.
I have tried to do it "semi-manually" in SMath Studio calculating separately every part of the equation and I receive also 71,54 MPa:

Do I make any mistake in vectors ("E", "hp" ) or "Eśr" definition?
I have attached the .sm file.

Thanks in advance for any answers and help!

Posadzka zbrojona wloknem.sm (26 KiB) downloaded 33 time(s).

You have made a little mistake over there.
Last part (n-1)/E[n] is written as continuation of your first sum.
If you take the sum part into parenthesis you will get your result.



Actually you even don't need parenthesis, just put placeholder correctly.



Regards