Question

Решите срочноооо!!!!!!!!!!!!!!!!!

Answer 1

$1.\\a)\;f(x)=3x^2+5x-8\\F(x)=\int(3x^2+5x-8)dx=x^3+\frac52x^2-8x+C\\b)\;f(x)=\frac1{x^3}\\F(x)=\int\frac1{x^3}dx=-\frac2{x^2}+C\\\\2.\\F(x)=5-x^4\\F'(x)=-4x^3=f(x)\;-\;ga\\\\3.\;f(x)=5x+7\\F(x)=\int(5x+7)dx=\frac52x^2+7x+C\\F(-2)=4:\\\frac52\cdot(-2)^2+7\cdot(-2)+C=4\\10-14+C=4\\C=8\\F(x)=\frac52x^2+7x+8$