SUPERFÍCIE E TORO DE ANCELMO L. GRACELI. f [Z], f [S] = COS LOG [S, Z] [+ ,- ] SIN LOG [S, Z] = f [Z], f [S] = COS LOG [S, Z] [+ ,- ] SIN LOG [S, Z] = f [Z], f [S] = COS θ LOG [S, Z] [+ ,- ] SIN θ LOG [S, Z] = f [Z], f [S] = COS θ LOG [S, Z] [+ ,- ] SIN θ LOG [S, Z] = f [Z], f [S] = COS LOG [S, Z] [ θ = π / 2] [+ ,- ] SIN LOG [S, Z] [ θ = π / 2] = [ R⁴] 2 f [Z], f [S] = COS LOG [S, Z] [ θ = π / 2] [+ ,- ] SIN LOG [S, Z][ θ = π / 2] = [ R⁴] f [Z], f [S] = COS θ LOG [S, Z] [ θ = π / 2] [+ ,- ] SIN θ LOG [S, Z] [ θ = π / 2] = [ R⁴] f [Z], f [S] = dz / ds = COS θ LOG [S, Z] [ θ = π...