a) Numerical integration
b) Penality approach method
c) Gaussian quadrature approach
d) Rayleighs method
Answer: c
Explanation: Gaussian quadrature is to select the n Gauss points and n weights such that provides an exact answer for polynomials f(ξ) of as large ∼ degree as possible. In other words, the Idea is that if the n-point integration formula is exact for all polynomials up to as high a degree as possible, then the formula will work well even if f is not a polynomial.
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