х²-1=у
2хdx=dy
e^(x²-1)=e^y
∫xe^(x²-1)dx=0.5∫2x*e^(x²-1)dx=
0.5∫e^(x²-1)d(x²-1)=0.5∫e^(y)dy=0.5e^(y)+с=0.5e^(x²-1)+с
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х²-1=у
2хdx=dy
e^(x²-1)=e^y
∫xe^(x²-1)dx=0.5∫2x*e^(x²-1)dx=
0.5∫e^(x²-1)d(x²-1)=0.5∫e^(y)dy=0.5e^(y)+с=0.5e^(x²-1)+с