Please provide detailed solutions.

3) Consider the maximization model F(X1 , X2 , X3 , X ) = x x , + x, x ,tax tax, - X; + a , subject to * +x2 - a;X; tax, =0 a) Write out all the first and second-order conditions. (You do not need to solve these conditions.) b) What does the maximization problem itself tell us about the signs of each of the following partial derivatives ox 2 0x 3 OxA a a