Question

(1-2x)/3 первообразная

Answer 1

$y= frac{1-2x}{3}= frac{1}{3}- frac{2x}{3}$
$Y= frac{x}{3}- frac{2x^{2}}{3*2}+C=frac{x}{3}- frac{x^{2}}{3}+C=frac{x-x^{2}}{3}+C=frac{x*(1-x)}{3}+C$