Hey,

I find the mistake. :)

Delete the function " t -> " .

I want to try, simply plot the bezier curve with the controlpoints in 3D. I used the complex number, because I have seen it in another sequenz... Now I have try it really simply, step by step.

But i can´t plot it... Why it doesn´t works? :(

I want to try to plot a curve, not a surface, but i have no idea how can i do this. Very frustratingly -.-´