I need to answer this question by using (Matlab program) please ..

many thanks

Applications: .The direct ray travels along a straight line through the top layer from source to detector at velocity v. top layer to the detector, travelling along its entire path at the top layer velocity vl of the interface at the higher The reflected ray is obliquely incident on the interface and is reflected back through the .The refracted ray travels obliquely down to the interface at velocity v1, along a segment velocity v2, and back up through the upper layer at Receiver (R Source DERECT WAVE REFLECTED WAVE Velocary c# Velocity MEAD WAVE B Ray paths for a layer over a halfspace. Fig. 3 Seismic rays travel time. . Express the traveltime that each ray (direct, reflected, refracted) takes to travel from source to receiver in function of source-receiver distance x (offset), depth h and the velocities of the layers (vl and v2). Plot the different functions in one single plan (t-x). Use the following: 2, .V-[800, 2500], 20m, geophone spacing: 05:100 3. 0 10 20 30 4050 60 70 80 0 100 Direct 0.02 0.04 0.06 0.08 Refracted Refected Mutiple 0.12 0.14 0.16 0.18 Fig. 4 Curves obtained using mfile