differentiate x*e^x
Let's differentiate: (xex)'
We differentiate U1 = x and V2 = ex using: (U1·V2)' = (U1)'·V2 + U1·(V2)'
Let's perform the differentiation U1: (x)'
1
Let's perform the differentiation V2: (ex)'
ex
You can evaluate the resulted derivative (U1·V2)': 1·ex + xex
ex + xex
exx + ex
This expression can be factorized into: ex·(x + 1)
Answer:   ex·(x + 1)