parameter
Author: Andreas Brinken

f(x) = sin(x)
x_0 = 0.1 (slider from -5 to 6, step 0.1)
t_{x_0}(x) = f'(x_0) * (x - x_0) + f(x_0)
P = Intersect(t_{x_0}, f, (0.10000001763341043, 0.09983343419214498))
Text: "P=(x_0; y_0)" + "=(" + (x(P)) + ";" + "sin " + (x(P)) + ")" + "=(" + (x(P)) + ";" + (y(P)) + ")"