Dana jest funkcja f(x) = -x³ + 8x. Wówczas:
a. f(-3) = 3
b. f(0) = 1
c. f(-2) = -24
d. f(1) = 9
e. f(3) = 0
b. f(0) = 0
d. f(1) = 7
e. f(3) = 3
prawidłowe są odpowiedzi a) i c)
a. f(-3) = 3 prawda
b. f(0) = 1 fałsz
c. f(-2) = -24 fałsz
d. f(1) = 9 fałsz
e. f(3) = 0 fałsz
f(x) = -x³ +8x
f(-3) = -(-3)³ + 8*(-3) = - (-27)-24 = 27 -24 = 3
f(0) = -(0)³ +8*0 = 0 + 0 = 0
f(-2) = -(-2)³ +8*(-2) = -(-8) -16 = 8 -16 = -8
f(1) = - 1³ +8*1 = -1 +8 = 7
f(3) = - 3³ + 8*3 = -27 +24 = -3
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a. f(-3) = 3
b. f(0) = 0
c. f(-2) = -24
d. f(1) = 7
e. f(3) = 3
prawidłowe są odpowiedzi a) i c)
Dana jest funkcja f(x) = -x³ + 8x. Wówczas:
a. f(-3) = 3 prawda
b. f(0) = 1 fałsz
c. f(-2) = -24 fałsz
d. f(1) = 9 fałsz
e. f(3) = 0 fałsz
f(x) = -x³ +8x
f(-3) = -(-3)³ + 8*(-3) = - (-27)-24 = 27 -24 = 3
f(0) = -(0)³ +8*0 = 0 + 0 = 0
f(-2) = -(-2)³ +8*(-2) = -(-8) -16 = 8 -16 = -8
f(1) = - 1³ +8*1 = -1 +8 = 7
f(3) = - 3³ + 8*3 = -27 +24 = -3