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Describe two methods for optimizing a function z=f(x,y)subject to a constraint.

Short Answer

Expert verified

The first method to optimize a function is, by using the derivative method. The second method to optimize a function is, by using Lagrange multipliers.

Step by step solution

01

Step 1. Given information

We need to explain the two methods for optimizing a function z=f(x,y)subject to a constraint.

02

Step 2.The two methods for optimizing a function z=fx,y subject to a constraint.

To optimize a function of two variables z=fx,ysubjected to a constraint gx,y=0one way is to solve gx,y=0in terms of xor yand use that value in fx,yso that fx,ybecomes a function of one variable only, then using the derivative method the extreme value can be found out.

The second method is, to use the Lagrange multipliers in which a scalar λis multiplied to the constraintgx,y=0and then the equation∇fx,y=λ∇gx,yis solved to find the points where the function can have extreme value.

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