So the formula i(t)=CdV/dt works for a constant value of a capacitor, but in a variable capacitor, i found the next formula on another site
i(t)=C(t)*dV(t)/dt + V(t)*dC(t)/dt
Is this formula correct?
How do you get the new formula from the previous one, with implicit differentiation?
In which specific book can i find this information?
Thanks for the future answers.