Evaluate the chebyshev spacing for a function, Mechanical Engineering

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Evaluate the chebyshev Spacing for a function y = 2 x 2 - x for the range 0 ≤ x ≤ 2 where four precision point are required. For these precision points, determine φ2, φ3, φ4 and ψ2, ψ3 and ψ4; if Δφ = 45o and Δψ = 90o


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