Question

Despejar r1 de 1/r=1/r1+1/r2+1/r3​

Answer 1

Respuesta:

R = r³/(r² + 2r + 1)

Explicación paso a paso:

1/R = 1/r¹ + 1/r² + 1/r² + 1/r³

1/R = 1/r¹ + 2/r² + 1/r³

1 = (1/r¹ + 2/r² + 1/r³)×R

1 / (1/r¹ + 2/r² + 1/r³) = R

1 / (r² + 2r + 1)/r³ = R

r³/(r² + 2r + 1) = R

R = r³/(r² + 2r + 1)