Question

al evaluar la funcion lineal  la f(x)= -2x/3+1/2 en x=-3/4 se odtiene que f(x) es:

Answer 1

f(x) = 2x/3 + 1/2
f(-3/4) = -2(-3/4)/3 +1/2
f(-3/4) =(6/4 )/3+1/2
f(-3/4) = (3/2)/3 + 1/2
f(-3/4) = 3/6 + 1/2
f (-3/4) = 1/2 +1/2
f( -3/4) =  2/2
f( -3/4) = 1

Answer 2

Si: $f(x) = \frac{-2x}{3} + \frac{1}{2}$

Entonces, para x = -3/4 , tendremos que:

$f(x) = f( \frac{-3}{4} ) = \frac{-2(-3/4)}{3} + \frac{1}{2}$

$f(x) = f( \frac{-3}{4} ) = \frac{3/2}{3} + \frac{1}{2}$

$f(x) = f( \frac{-3}{4} ) = \frac{3}{6} + \frac{1}{2}$

OJO:  3/6 = (3*1)/(3*2) = 1/2

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

$f(x) = f( \frac{-3}{4} ) = 1$ ← Respuesta


Eso es todo!! Saludos!