👤

f:R-->R,f(x)=[tex] \left \{ {{2 x^{2}+x-1 , x \leq 1 } \atop {x+1 , x\ \textgreater \ 1}} \right. [/tex]
a) f(0)+f(2)
b)aratati ca functia f este continua in x =1
c)rezolvati in multimea nr reale inecuatia f(x)≤ 0