Question

求不定积分∫xe^(2-x²)dx

要详解，过程解释

Answer 1

∫xe^(2-x²)dx
=1/2∫e^(2-x²)dx²
=-1/2∫e^(2-x²)d(2-x²)
=-e^(2-x²)/2+C

Answer 2

∫xe^(2-x²)dx
=(-1/2)∫e^(2-x²)d(2-x²)
=(-1/2)e^(2-x²) + C