What is the integral of e^{-x}*x^2 ?

The integral of e^{-x}*x^2 is -e^{-x}x^2+2(-e^{-x}x-e^{-x})+C

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integral of e^{-x}*x^2

\int e^{- x} \cdot x^{2} d x

- e^{- x} x^{2} + 2 (- e^{- x} x - e^{- x}) + C

Solution steps

\int e^{- x} x^{2} d x

Apply Integration By Parts

: - e^{- x} x^{2} - \int - 2 e^{- x} x d x

= - e^{- x} x^{2} - \int - 2 e^{- x} x d x

\int - 2 e^{- x} x d x = - 2 (- e^{- x} x - e^{- x})

= - e^{- x} x^{2} - (- 2 (- e^{- x} x - e^{- x}))

Simplify

= - e^{- x} x^{2} + 2 (- e^{- x} x - e^{- x})

Add a constant to the solution

= - e^{- x} x^{2} + 2 (- e^{- x} x - e^{- x}) + C

arcsin (\frac{1}{t})

\frac{\partial}{\partial x} (e^{- 7 x} cos (3 π t))

10 - 2 e^{x}

\frac{d}{d x} (sin (4 x - 5))

(\frac{x}{sin ( y )} + 2) d x + \frac{( x ^{2} + 1 ) cos ( y )}{cos ( 2 y ) - 1} d y = 0

What is the integral of e^{-x}*x^2 ?
The integral of e^{-x}*x^2 is -e^{-x}x^2+2(-e^{-x}x-e^{-x})+C