Question

f:R⇒R, $f_({x})$=2x-1
a. Det. nr. real m pt care pct A(2m,m²+3) apartine reprez. grafice a funtiei f.

Answer 1

[tex]f: \mathbb{R} \rightarrow \mathbb{R};~f(x)=2x-1 \\ A(2m,m^2+3) \in G_f \Longrightarrow f(2m)=m^2+3 \\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~f(2m)=2*2m-1 \\ 4m-1=m^2+3 \\ 4m-m^2=4 \\ m(4-m)=4 \\ \underline{m=2}[/tex]