∫(0→3)√(2-x)^2 dx
=∫(0→3) |2-x| dx
=∫(0→2) (2-x) dx + ∫(2→3) (x-2) dx
=[2x-1/2*x^2](0→2) + [1/2*x^2-2x](2→3)
=(2-0)+[-3/2-(-2)]
=2+1/2
=5/2
望采纳
∫(0→3)√(2-x)^2 dx
=∫(0→3) |2-x| dx
=∫(0→2) (2-x) dx + ∫(2→3) (x-2) dx
=[2x-1/2*x^2](0→2) + [1/2*x^2-2x](2→3)
=(2-0)+[-3/2-(-2)]
=2+1/2
=5/2
望采纳