I=∫[0.1]dx∫[0.1]|y-x²|dxdy
=∫[0,1]dx{∫[0,x²](x²-y)dy+∫[x²,1](y-x²)dy}
=∫[0,1] [x^4+(1-x²)²]dx
=∫[0,1] [2x^4-2x^2+1]dx
=2/5-1/2+1
=9/10
求∫∫D|y-x^2|dxdy,D:0
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