34. Incorrect. The answer is false, not true. Treat L1/4E1/3 as if they were constant, which gives you the partial derivative as ¶Q/¶K = 1/2K-1/2L1/4E1/3. Note if you want to know whether marginal product is increasing or decreasing take the second partial, which equals –1/2*1/2*K-3/2L1/4E1/3. Since this value is negative we have diminishing marginal product.