Question

dada la funcion f={(1,2),(3,6),(4,8),(5,7)}, calcule el valor de E=[(f(3)+f(4))/(f(5))]

Answer 1

Hola!  \ (•◡•) /

Reescribamos f para darnos cuenta sobre f(x)

f = { ( 1, f(1) ) ; ( 3,f(3) ) ; ( 4,f(4) ) ; (5,f(5) ) }

Entonces f(1) = 2, f(3) = 6, f(4) = 8, f(5) = 7

$E = [\frac{f(3)+f(4)}{f(5)} ]  \\ \\ E = \frac{6+8}{7} = \frac{14}{7} = 2$