WITH MATLAB !!!

Let be the function

where  is a real parameter. a) For  given, write a Matlab function whose only input argument will be x and which will calculate f (x). Make sure that your function can take vectors as an input argument. Use the global command from Matlab to transfer the value of the parameter  to your function. B) Using the function developed in (a), plot for the values of the parameter  = 0.015625;  = 0.1;  = 0.5, the graphs of the function f (x) over the interval [0,1, 2]. Clearly identify the 3 curves. 

f(x) = - ((1 x2)2 + 2x2)