Letf andg be r-integrable over [a, b] and be g(x) 20 or g) s0, vxe [a, b]. then then exists a no. u such that mš u sm, where m and m be the g.l.b or l.u.b of f

Letf andg be R-integrable over [a, b] and be g(x) 20 or g) S0, VxE [a, b]. Then then exists a no. u such that mš u SM, where m and M be the g.l.b or l.u.b of f over a, b], respectively then b b fw)g ) dr = pg r) dx is known as a a