(%i1) integrate(sin(x)^2/x,x,minf,inf); Principal Value log(- 1) (%o1) - -------- 2 (%i2) integrate(sin(x)^2/x,x,10000000000,10000000000); (%o2) 0 (%i3) Function sin(x)^2/x is odd function, so it seems that integrate(sin(x)^2/x,x,minf,inf) must return 0. Am i wrong?