To put PhilBot's comments another way: the antiderivative of sin(x) is cos(x) PLUS an arbitary constant. So cos(x)+1 is just as valid of an antiderivative as cos(x)+0. Your calculator picked one way, labview picks another. to get a unique answer you have to specify an initial condition for the integrator.
to get the answer you are after, you might take the average (mean) value over one cycle and subtract that out.
Quote:
Originally Posted by Felipe Sagui
I understand what happens but when I do it on a hp50g calculator the result is different (this is the result that I really want...)
why these results are differents? Should labview integration be equals on the calculator?
|