Question

sera que alguien podra ayudarme

Answer 1

Se trata de reemplazar el valor de x de acuerdo al valor indicado en al función:
a)
f(1/2) = (1/2)² - 3*1/2 + 2 = (1/4) + (3/2) + 2 = (1/4) + (6/4) + 2 = 2+ 7/4
7/4 = (4/4) + (3/4) = 1 + 3/4
2 + (7/4) = 2+1+(3/4) = 3+(3/4) = 3 3/4

b)
f(-1) = -1² - (3*-1) + 2 = 1 + 3 + 2 = 6

c)
f(1/a) = (1/a)² + 3*1/a + 2 = 1/a² + 3/a + 2

d)
f(x+h) = (x+h)² + 3(x+h) + 2 = x²+2xh+h² + 3x+3h + 2