Machine Learning, Deep Learning, Computer Science.
those two equations for width: 2*width = 200–2*length width = [200–2*length] / 2 width = 100 — length So, now we can substitute 100 — length for width: A(length) = length * [100 — length] A(length) = 100*length — length² The next step is to take the derivative of A(length): A’(length) =