i need help typing a formula into the "formula" express vi :)

[NewMachine]

Hello - I am using Labview 7.0 and put an express vi called "formula" down, but the formula that I put in is invalid because I don't know the protocol of how to type certain things. I would like to have a simple formula of this entered : [ f(x) = 1.3138 * e^-0.0373x ]

I couldn't get the exponent part right. Also - will the express vi know that the input is the x in the function?

Thanks!!

[ElSmitho]

Salutations,

Open the help, search for "formula node" then look at "creating formula nodes", part 2 (at least in 7.1.1) says "Review the available functions and operators you can use. " with links to the operators and functions.

I'm pretty sure if you look at that, there shouldn't be an issue.

Sincerely,
ElSmitho

[NewMachine]

when i typed in the ** for the exponent (i typed in this: 1.3138*(2.71828182845904509)**(-0.0373*x) ) the calculator said it was an invalid formula. i don't know how to use the ** function.

[Dennis_Knutson]

Does the X1 Input have a label of X1 or x? By default, it's X1 so if you change your formula to use X1 or change the label to x, it will work.