ƒ(x) = ax³ + bsinx + 2
ƒ(- 1) = - a + bsin(- 1) + 2 = - a - bsin(1) + 2 = 17
∴ƒ(1) = a + bsin(1) + 2 = - [- a - b(sin(1) + 2] + 4 = - 17 + 4 = - 13
ƒ(x) = ax³ + bsinx + 2
ƒ(- 1) = - a + bsin(- 1) + 2 = - a - bsin(1) + 2 = 17
∴ƒ(1) = a + bsin(1) + 2 = - [- a - b(sin(1) + 2] + 4 = - 17 + 4 = - 13