2918.sagews

var('t')

f(t)=16.1*e^(0.07*t);

integral(f,t,0,10)

t |--> 233.163122718

var('x')

c(x)=x^2/100-2*x+120;

ic = integral(c,x)
s

\newcommand{\Bold}[1]{\mathbf{#1}}x \ {\mapsto}\ \frac{1}{300} \, x^{3} - x^{2} + 120 \, x