x1,y1x2,y2x3,y3https://web.archive.org/web/20171227155009/http://mathforum.org/library/drmath/view/69930.htmllog(y3)=mlog(x3)+y1m=(y2-y1)/(x2-x1)y3=10^y1*x3^mx3^m=y3/10^y1x3=sqrt_m(y3/10^y1)x3=(y3/10^y1)^(1/m)1/m=(x2-x1)/(y2-y1)Equationvscodevariablenamesx1=curve_data_x[i-1],y1=curve_data_y[i-1]x2=curve_data_x[i],y2=curve_data_y[i]x3=?,y3=flowx3=(flow/10^)MyTake:y1=10^(a*x1+b)y2=10^(a*x2+b)log(y1)=a*x1+b->b=log(y1)-a*x1log(y2)=a*x2+b->a=(log(y2)-b)/x2=(log(y2)-(log(y1)-a*x1))/x2a=(log(y2)-log(y1)+a*x1)/x2a*x2-a*x1=log(y2)-log(y1)a=(log(y2)-log(y1))/(x2-x1)y3=10^(a*x3+b)x3=(log(y3)-b)/a
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