Mathematical Economics Doubt

Posted by Homer Simpson on Apr 10, 2014; 4:48pm
URL: http://discussion-forum.276.s1.nabble.com/Mathematical-Economics-Doubt-tp7586591.html

Obtain a linear approximation to the production function x = 3K^(2/3)L^(1/3) near K=1000 and L=125. Using this approximation, estimate the output if K = 998 and L=126

what does this linear approximation mean exactly? partial derivatives??