Question

Aflati zeroul functiei f:R⇒R, daca :
a) f(x)=2x+1
b) f(x)=3-5x
c) f(x)=√10x
d) f(x)=1(o doime)x-7,2 
            2

Answer 1

a)2x+1=0=>2x=1=>x=[tex] \frac{1}{2 } [/tex]
b)3-5x=0=>-5x=-3=>x=$\frac{3}{5}$
c)∛10x=0=>x=0
d)nu inteleg