Question 46568
{{{1/(1/R1 + 1/R2)}}}
{{{(R1R2)/((R1R2)(1/R1 + 1/R2))}}}
{{{(R1R2)/((R1R2/R1) + (R1R2/R2))}}}
{{{(R1R2)/(R2 + R1)}}} = R(low)t