โปรดช่วยฉันเขียนฟังก์ชั่น?

ตอบ:

# (h + g) (x) = x ^ 2-5x-4 #

# (h * g) (x) = x ^ 3-10x ^ 2 + 12x #

# (h @ g) (x) = - 8N + 2 #

คำอธิบาย:

1)

# (h + g) (x) = (x-4) + (x ^ 2 -6x) #

# (h + g) (x) = x-4 + x ^ 2 -6x #

# (h + g) (x) = x ^ 2-5x-4 #

2)

# (h * g) (x) = (x-4) (x ^ 2 -6x) #

# (h * g) (x) = x ^ 3-6x ^ 2-4x ^ 2 + 12x #

# (h * g) (x) = x ^ 3-10x ^ 2 + 12x #

3)

# (h @ g) (x) = 4 (-2n + 1) -2 #

# (h @ g) (x) = - 8N + 4-2 #

# (h @ g) (x) = - 8N + 2 #