In the circuit pictured the current through R1 is I1 = 6A in the direction shown. a) Determine the current I4. Describe choice of node or loop (including direction of travel). b) Determine the current I3. Describe choice of node or loop (including direction of travel). c) Determine the Determine the potential difference Vgd = Vg - Vd between points g and d.

I need an expert solution in MATLAB language for the question, and I need the solution to be using MATLAB and in the form of an image. I do not need any notes with the program, just an explanation at the end of the image. By the way, two questions. Q2. Write a MATLAB user-defined function, freefall(), that computes the velocity and the distance of a free fall object. The velocity and the distance of a free fall object can be written as: v = gt y = yo+gt² where yo is the initial position, t is the time travelled and g is the acceleration due to gravity (- 9.81 m/s2). Note that the initial position can only be a scalar value. Q7. Write a user-defined MATLAB Function for the following math function: ((xy-5)² z = if x, y > 0 elsewhere The inputs to the function are x and y, where the output is z. Write the function such that x and y can be vectors. I. II. Use the function to calculate z(3,4) and z(5, -7). Use the function to make a colored 3D plot of the function z for -5