Find ther critical point x* of f(x)=8x12-9212 +221 23 +7x2²+223 +3x3²+7±1+7+73 +3 2 subject to g(x)=1+72-5x3 = -2. Specify below the value of the Lagrange multiplier, A, and the value of the function f(x*). (Make sure you use g(x) as specified above: if you divide through by constants, the resulting value of X can changel) In both cases, give your answer as an exact fraction or a decimal approximation accurate to at least 3 significant figures. A= 数字 f(x*) =