y = 2x^2+5
y = 4x^2 + 1
y = 8
y = x^3 + 5x^2 - 7x + 12
y = 7x^2 + x - 4
y = -13x + 2
y = 3x^3 - 5x + 2
y = 12x - 3
y = x
y = x^8 - x^7 + x^4 - 6x^3
y' = 8x^7 - 7x^6 + 4x^3 - 18x^2
y' = 14x + 1
y' = 12
y' = 9x^2 - 5
y' = 0
y' = -13
y' = 8x
y' = 1
y' = 3x^2 + 10x - 7
y' = 4x