I tried to put ur script but it was incorrect with line $37$ with a w 'Error:File: CalcDeflection.m Line: $38$ Column: $49$

Identifier $\text{'}$w$\text{'}$ is not a function or a shared variable. To share $\text{'}$w$\text{'}$ with a nested function, initialize it in the current scope. For more information, see Sharing Variables Between Parent and Nested Functions.$\text{'}$ this is what the error said