Evaluate the integrals: 1₁ = - S using Second-order Gauss quadrature. O I₁ = 3.1416 12 = 1.5708 1₁ = 3.1416 12 = 1.7671 1₁ 1 2.3856 12 = 2.9597 TC 2sin2 xdx and 1₂ = h 2π sin² x 0 -dx

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