When an electric current passes through two resistors with resistance r and s, connected in parallel, the combined resistance, r, can be calculated from the equation
image for when an electric current passes through two resistors with resistance r and s, connected in parallel, the comb
where r, r , and s are positive. assume that s is constant.
find dr/ dr
is r and increasing or decreasing function of r?
(enter increasing, decreasing, neither, or both (write both if there are values of r for which r is increasing, and other values for which it is decreasing; enter neither if this is a constant function.)