Step 6: Plot sigma_x vs. ri, Take 4: Functions

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Let's create a function to calculate bending_stress that outputs σ_x given (M, r_i, r_o )

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Call function bending_stress
Run and check output

Before we part, let's remind ourselves of some important programming guidelines that we have followed in this tour:

• Develop code incrementally, testing obsessively at each stage. Develop a plan for how you are going to build your code before you sit at the computer.
• Dig through the MATLAB help diligently to figure out how to use specific functions etc. Usually, the examples are the best place to start. This is a better strategy than desperately hunting for the TA every time you need help with your code.
• Comment your program liberally.