A Production function expressed as
\(Q=A[α K^{-β}+(1-α) L^{-β}]^{\frac{-1}{β}}\) or \(Q=A[α L^{-β} + (1-α) K^{-β}]^{\frac{-1}{β}}\)
When A > 0, 0 < α < 1 and β > -1
Where L = Labour, K = Capital and A, α and β are three parameters is called
1. Constant elasticity substitution function
2. Variable elasticity substitution function
3. Leontief - type function
4. Cobb - Douglas function
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