34. Correct. The answer is
false. Treat L^{1/4}E^{1/3} as if they were constant, which
gives you the partial derivative as ¶Q/¶K = 1/2K^{-1/2}L^{1/4}E^{1/3}. Note if you want to know whether marginal
product is increasing or decreasing take the second partial, which equals
–1/2*1/2*K^{-3/2}L^{1/4}E^{1/3}. Since this value is negative we have
diminishing marginal product.