Can someone please double check this for me? It seems to be correct but the number I get is far larger than those obtained using non-algebraic methods of obtaining derivatives.
yeah it was [COLOR=#0000AA][FONT=monospace]
BTW, I double posted the question because I already attmepted it before and ended up with 0.4 whcih I was told was right but the answer did not make sense seeing how as I have already obtained the derivative using the midpoint rule, trapezoid rule etc.