Really need help with plotting my matrix.

random1072

2020 3 19

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The direction are to "Plot the force of each link as a function of the angle from the y-axis direction (i.e. −90◦ ≤ θ ≤ +90◦ )". The title of my matrix is rref(M_Pos_Y).

Attached is my matrix which shows the values for the different link forces using the rref.

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random1072 2020-3-19

Each force value is defined in column 13 of the picture I attached. For instance force A would be 120.8 and force B would be 402.67 and so on. I just have to plot the values of the forces from the attached image ( in column 13 ). The force values are in the y coordinate system and the x value of the plot is supposed to be from -pi/2 to pi/2. Just dont know how to write the proper code to display said plot.