∫(上限π/2,下限0)(∫(上限π/2 ,下限x)siny/2 dy)dx

问题描述:

∫(上限π/2,下限0)(∫(上限π/2 ,下限x)siny/2 dy)dx
错了哦 应该是 ∫(上限π/2,下限0)(∫(上限π/2 ,下限x)siny/y dy)dx

关键步骤:区域D:{(x,y)|0