\fV4x 2+ ZX 2. )7/4x 2 + 1 a = 1 u = 2X hyp sect - let u = atand adj 2x = tant Seco = 14x2 + 1 tano = 2x sect = 2 4x 2 + 1 2 dx = sec's do 2 secto do ax = - sec's do Seco IT. tano - 2X - opp = = Ssect do 1 7 adj = - In ( sect + tant ) + C = 2 ( V/4x2+1 + 2x ) + C Aus