Question

check my math pls differentiate 100/y+y=min

Answer 1

i got -100/y^2+1=0

Answer 2

then -100+y^2=0

Answer 3

y=10

Answer 4

min is just a constant and i only need the positive numbers

Answer 5

You'd probably get better results (feedback) if you'd present the problem accurately.

differentiate 100/y+y=min is quite unclear.

You might write, instead: "If f(y) = 100/y + y, find the value of y that minimizes f(y)."

What do you need help with?