hi, this is my first post here

so could you help me with this please

for the curve y = f(x)where x > 0 , dy/dx = 6 - 24/x^2

if the minimum turning value of the function is 20, find f(x)

so far I've integrated dy/dx to get y = 6x +24/x

assuming I have this part correct, what do I do with the minimum turning point at 20?