于是,所求的使气体体积压缩所作的功为 0.5 059800丌 F(xdx 0 0 =98007(-ln(1-x) 9800xn2≈213×10(焦耳) 微分元素:dW=F(x)dx kdx k=9800丌于是, 所求的使气体体积压缩所作的功为:   − = = 0.5 0 0.5 0 d 1 9800 ( )d x x W F x x  9800 ( ln(1 )) 0.5 0 =  − − x 9800 ln 2 2.13 10 ( ). =    4 焦耳1 d : d ( )d x k x W F x x − 微分元素 = = k = 9800