Solve the nondimensionalized ODE using finite difference methods that describe the temperature distribution in a circular rod

Question:

Solve the nondimensionalized ODE using finite difference methods that describe the temperature distribution in a circular rod with internal heat source S

Over the range 0 ≤ r ≤ 1, with the boundary conditions

For S = 1, 10, and 20 K/m². Plot the temperature versus radius.

Distribution
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