Question

Determinar o zero da função

f (x)=´7x
.
f (x)= $\frac{x+1}{3}$
.
f (x)= $\frac{3+4x-5}{2}$

Answer 1

Resposta:

f(x)= 7x

7x=0

x=0/7=0

------------

b) f(x)= x+1/3

x+1/3=0

x+1=0

x=-1

--------------

f(x)=3+4x-5/2

3+4x-5/2=0

3+4x-5=0

4x=5-3

4x=2

x=2/4= 1/2