d((1/a^2)-((t/a)+(1/a^2))e^(-at))/dt
You asked:
MathBot Answer:
Evaluated
\(\displaystyle \frac{d \cdot \left(\frac{1}{{a}^{2}} - \left(\frac{t}{a} + \frac{1}{{a}^{2}}\right) \cdot {e}^{-\left( a t \right)}\right)}{d t} = \frac{- \left(\frac{t}{a} + \frac{1}{a^{2}}\right) e^{- a t} + \frac{1}{a^{2}}}{t} \)
Expanded
\[\frac{d \cdot \left(\frac{1}{{a}^{2}} - \left(\frac{t}{a} + \frac{1}{{a}^{2}}\right) \cdot {e}^{-\left( a t \right)}\right)}{d t} = - \frac{e^{- a t}}{a} + \frac{1}{a^{2} t} - \frac{e^{- a t}}{a^{2} t}\]
Factored
\[\frac{d \cdot \left(\frac{1}{{a}^{2}} - \left(\frac{t}{a} + \frac{1}{{a}^{2}}\right) \cdot {e}^{-\left( a t \right)}\right)}{d t} = - \frac{\left(a t - e^{a t} + 1\right) e^{- a t}}{a^{2} t}\]
\(e\) is Euler's number, a mathematical constant that is approximately \(2.71828\).