Matlab Question

Let vec1 = linspace(0,100,200), and let vec2 = sin(vec1).

a). Compute the number of elements of vec2 that are negative, and assign the result to res1.

b). Determine whether all the elements of vec2 are greater than -1. Let the result be res2, where res2=1 if true and res2 = 0 if false.

c). Find the maximum index value at which an element of vec2 is greater than -0.5 and assign the result to res3.