I'm confused by how to answer part b....

Use Okun's law to . . .

(a) . . . rewrite the central bank loss function in a way that better reflects the dual mandate of the Federal Reserve in terms of unemployment and inflation, and . .

(b) . . . then determine the value of in the central bank loss function that would result in an equal weighting of the two terms in the dual mandate of the Federal Reserve.

How can I solve this?