The solution y s {\displaystyle y_{s}} is tangent to every curve y c ( x ) {\displaystyle y_{c}(x)} at the point ( c , 0 ) {\displaystyle (c,0)} .
Řešení y s {\displaystyle y_{s}} je tečnou ke každé křivce y c ( x ) {\displaystyle y_{c}(x)} v bodě ( c , 0 ) {\displaystyle (c,0)} .