Can someone help me from (a)-(c) ..

Em 1: Q is quantityr of production. K is capital input. I. is labour input. PK and P; are the marginal costs for relevant input. Minimize the cost of 400 units of production for a firm when G = 1th \"i."2 and PK = 25 and P; = 10. a} Wi down the Lagrange function in this case. b) Calculate the cost-nunimiaing output using Lagrange Multiplier Methodl c} Use the bordered Hessian to show that the cost is in fact a minimum. d} Briey state the effect on cost when production increases by a unit