fallen_6666 Posted December 1, 2005 Share Posted December 1, 2005 Hey could someone please help me with this question? the length of 3 sides of a trapezoid is 3 cm, Find the length of the 4th side if the area is maximized. Link to comment Share on other sites More sharing options...
rakuenso Posted December 1, 2005 Share Posted December 1, 2005 edit nm... I took a pretty ridiculous derivative... but the answer 6? what i did was express h in terms of x and then differentiated Link to comment Share on other sites More sharing options...
fallen_6666 Posted December 1, 2005 Author Share Posted December 1, 2005 umm, could you please show me some of the steps, its just that im confused on how to get started. Link to comment Share on other sites More sharing options...
rakuenso Posted December 1, 2005 Share Posted December 1, 2005 [math] A = (b1+b2)/2*h = (3+3+2*b_2)/3*sqrt(9-x^2) [/math] Link to comment Share on other sites More sharing options...
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