5 x -- 5
x^5/5
The derivative of a constant times a function is the constant times the derivative of the function.
Apply the power rule: x5x^{5}x5 goes to 5x45 x^{4}5x4
So, the result is: x4x^{4}x4
The answer is:
4 x
3 4*x
2 12*x