Write a user-defined MATLAB function that finds the condition number of a matrix a using infinity norm. For the function name and arguments use x = ConditionNum(a), where a is the matrix its condition number is to be determined, and x is the condition number. Use ConditionNum to find the condition number of the following matrix.

a= [-1 2 2; 0 2 -0.5; 0.5 1 -2]