basic Labview question

[sh3333]

hi

I use labview 8.6.1

When I try to use the formula node, even with a very simple formula /:

x^3-x^2+5

when x equals 10 , it gives me the output of -6.1..

but it should be 905,

and some times it gives me an error of integer type required: e.g: y=x^3,when th input is 10.

[Dennis_Knutson]

If you use the correct syntax for exponentiation, it works just fine. You must use '**'. This is documented in the help.

[Cory_K]

I ran into that exact same problem earlier.

Contrary to any intuition, the ^ operator does not mean exponent, it means bit XOR.

The operator you should use is **

Try this expression:

x**3 - x**2 + 5 

[smercurio_fc]

In the formula node you need to use ** to indicate power. This is documented in the LabVIEW Help.

Any reason you're using the formula node as opposed to using straight G?

[smercurio_fc]

I see everybody is picking at the low-hanging fruit.

[gjacob]

Instead of using the carat to raise a variable to a power, you will want to use the double asterisk that is documented in the LabVIEW help. Try using x**3-x**2+5 and you will get the answer you are looking for.

[Cory_K · Accepted solution]

---

smercurio_fc wrote:
I see everybody is picking at the low-hanging fruit.

---

Its a Monday  

[muks]

Maybe a monday but definetly not the solution...