f(x, y) = x² + y² − 2y + 1; R = {(x, y): x² + y² ≤ 4}

Differentiate with respect to x,             y = (2x + 1)(3x + 2)

Find ffb (3x + 2y)dA where D = {(x, y) | x² + y² ≤ 25, x ≥ 0}

f(x, y) = x² + y² − 2y + 1; R = {(x, y): x² + y² ≤ 4}

Please give me answer very fast in 5 min anu

Suppose that x and y are two positive real numbers so that x + y = 10.Maximize the product xy.

Maximize B=xy2​, where x and y are positive numbers such that x+y2=10.

If ƒ (x, y) = x³y³ + 2xy, then what is the second coordinate of Vf? (Remember to use * for multiplication.)

P = (x, y) = x + 4y ≤ 13 3x + y ≤ 6 x ≥ 0, y ≥ 0.