Question

3-Sendo f(x) = x2 + 7x + 10, calcule:
a) f(0) =
b) f(1) =
c) f(2)=
d) f(3) =
e) f(-1) =
f) f (-2) =

Answer 1

Resposta:

f(x) = x2 + 7x + 10

__________

a) f(0) = 0×2 + 7 × 0 + 10

f(0) = 0 + 0 + 10

f(0) = 10

b) f(1) = 1 × 2 + 7 × 1 + 10

f(1) = 2 + 7 + 10

f(1) = 9 + 10

f(1) = 19

c) f(2)= 2 × 2 + 7 × 2 + 10

f(2) = 4 + 14 + 10

f(2) = 28

d) f(3) = 3 × 2 + 7 × 3 + 10

f(3) = 6 + 21 + 10

f(3) = 37

e) f(-1) = (-1) × 2 + 7 × (-1) + 10

f(-1) = -2 -7 + 10

f(-1) = -9 + 10 = 1

f) f (-2) = (-2) × 2 + 7 × (-2) + 10

f(-2) = - 4 - 14 + 10

f(-2) = -18 +10

f(-2) = -8