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In the short run, a firm cannot vary its capital, K = 4, but can vary...

In the short run, a firm cannot vary its capital, K = 4, but can vary its labor, L. Does this firm experience diminishing or increasing marginal returns to labor in the short-run? What does this tell about the slope of the short run marginal cost curve? Explain.

q = L1/2K1/2  

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