find dy/dx if xy log(x+y)=1 Share with your friends Share 6 Gursheen kaur. answered this -8 View Full Answer vivekashwin answered this xy log(x+y)=1 xy=1/log(x+y)y=1/ x log(x+y)dy/dx=(x+y) log(x+y) + x / (x+y)(x log(x+y)) -8