Write a function eqfn that will calculate f(x) = x 2  1 x for all elements of x. Since division by 0 is not possible, if any element in x is zero, the function will instead return a flag of -99. Here are examples of using this function:

 Write a function eqfn that will calculate f(x) = x 2 + 1 /x for all elements of x. Since division by 0 is not possible, if any element in x is zero, the function will instead return a flag of -99. Here are examples of using this function: 

>> vec = [5 0 11 2];

>> eqfn(vec)

ans =

 -99

>> result = eqfn(4)

result =

 16.2500

>> eqfn(2:5)

ans =

 4.5000 9.3333 16.2500 25.2000