Solve these three questions in MATLAB. 1. Simple calculation : (125 + lg?x(7 - 4)] = cos(3*r?) 2. Numerical computation . 2 sin (0.38) 1 + v5 3. Represents the following complex operations, and find the real part, imaginary part, module and phase of Z 24 =4+3i,z2 =5+2* i, z3 =2e , z =222 / 23