फोजाबनाय आबादनि गाहाइ फारसे बिगुरा मोनसे आगजुनि थाखाय गुबुन आगजुखौ गाइसननाय गोहोनि सायाव सोनारो ।
The downward bend of a iso-product curve depends on the capacity of one equipment to replace another equipment .