A parking zone for the disabled
Answer: It is a collective investment in global peace, security, and stability. Peacekeepers protect civilians, actively prevent conflict, reduce violence, strengthen security and empower national authorities to assume these responsibilities.
We want to minimize s(x, y) = x + y such that xy = 36.
From the constratint we have y = 36/x, so the sum can also be written as
s(x, 36/x) = x + 36/x
Differentiate s with respect to x and find the critical points of s :
1 - 36/x² = 0 ⇒ x² = 36 ⇒ x = ±6
Both x and y must be positive, so it follows that x = y = 6, which gives a minimum sum of s(6, 6) = 12.