| f'(x) = 5x²

| f'(x) = 3x³

| f'(x) = 15x³

| f'(x) = 15x²

| f'(x) = 5x³

| f'(x) = 15x

| f'(x) = 3x

| f'(x) = -3x

| f'(x) = -3

| f'(x) = -6x

| f'(x) = 6x²

| f'(x) = -6

| f'(x) = 3x³ +2x

| f'(x) = 2x³ +4x

| f'(x) = 3x² +4x

| f'(x) = 3x +4x²

| f'(x) = 2x² +2x²

| f'(x) = x³ +4x

| f'(x) = -3x³ -2x

| f'(x) = -4x³ +x

| f'(x) = -4x⁴ -2

| f'(x) = -4x³-2

| f'(x) = 4x³ -2²

| f'(x) = -x³ -2x

| f'(x) = -2x+7

| f'(x) = -2x²

| f'(x) = -x +7

| f'(x) = -2x

| f'(x) = 2x

| f'(x) = -x³