Question

Exercitiul 1.DSU COROANA​

Answer 1

a)

$x=0\Rightarrow f(0)=-1\Rightarrow A(0,-1)\\x=3\Rightarrow f(3)=0\Rightarrow B(3,0)$

Unesti cele doua puncte si ala va fi graficul.

b)

$f(x)=x\Rightarrow \displaystyle\frac{x}{3}-1=x\Rightarrow \displaystyle \frac{x-3}{3}=x\Rightarrow x-3=3x\Rightarrow -2x=3\Rightarrow x=\displaystyle-\frac32\Rightarrow C\left(-\frac32,-\frac32\right)$