Very urgent please
a) Find a third-order function with Lagrangian interpolation functions.
b) Find a third-degree function using Newton's Center Difference Interpolation method.
c) Since it is known that there is voltage v(t) for the given circuit, calculate the true absolute error at t=1.2 s for options a and b.
Question 2: a) Find a quadratic polynomial that can be used instead of voltage in the circuit given in the first question using the curve fitting method.
b) Analyze whether the curve you find is reliable by performing error analysis for the polynomial you have found.