5 2*x
2*x^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: 10x410 x^{4}10x4
The answer is:
4 10*x
3 40*x
2 120*x