Tangente en t=0

t=τ

i(t)

i = 0.37 * I_0

t=τ

τ = 1 (slider from 0 to 5, step 0.02)
I_0 = 3.5 (slider from -5 to 5, step 0.05)
tgte(t) = If[t > 0, I_0 - (I_0 / τ * t)]
A: (τ, 0)
i(t) = If[t > 0, (I_0 * ℯ^(((-t)) / τ)), 0]
intermediaire: y = (0.37 * I_0)
B: (τ, (0.37 * I_0))
Lecture = Line(B, A)