Bom dia.
Meu gráfico não deu certo. O que está errado? https://imgur.com/a/JtSLzuT. O do professor saiu assim. https://imgur.com/a/sg4GHCT
(%i49) C(x):= 0.02*x^2 + 80/x;
(%o49) C(x):=0.02*x^2+80/x
(%i50) h(x,Delta):= (C(x+Delta)- C(x))/ Delta;
(%o50) h(x,Delta):=(C(x+Delta)\-C(x))/Delta
(%i55) wxplot2d([h(x,Delta)], [x,0,5], [y,0,120])$
plot2d: expression evaluates to non-numeric value everywhere in plotting range.
plot2d: nothing to plot.
(%t55) (Graphics) 
