Determine whether the following production functions exhibit increasing, decreasing or constant returns to scale.
a. Q = L + K
b. Q = 10KL
c. Q = L + K1/2L 1/2 + K
d. Q = 10K1/4L 1/4
a.
Q=L+K
mQ=m(L)+m(K)
mQ=m(L+K)
Constant returns to scale.
Since the value of m is same now
b.
Q=10KL
mQ=10(mK)(mL)
mQ=10m^(1+1)(LK)
mQ=m^2(10KL)
Increasing returns to scale.
Since the value of m is higher now
c.
Q = L + K1/2L1/2 + K
mQ=(mL)+(mK^0.5)(mL^0.5) +(mK)
mQ=m(L+K)+m(K^0.5L^0.5)
mQ=m(L + K1/2L1/2 + K)
Constant returns to scale
Since value of m is same now
d.
Q = 10K1/4L 1/4
mQ=10*(mK^0.25)(mL^0.25)
mQ=10m^0.5(K1/4L1/4)
Decreasing returns to scale
Since the value of m is lower now
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