−dQt=E=k(θ−θ0)-\frac{dQ}{t}=E=k\left(\theta -\theta _0\right)−tdQ=E=k(θ−θ0)
−dQdt=E=k(θ22−θ0)-\frac{dQ}{dt}=E=k\left(\frac{\theta ^2}{2}-\theta _0\right)−dtdQ=E=k(2θ2−θ0)
dQdt=E=k(θ2−θ02)\frac{dQ}{dt}=E=k\left(\theta ^2-\theta _0^2\right)dtdQ=E=k(θ2−θ02)
