34. Correct. The answer is
false. 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.