How do you find the derivative of 2 sqrt x?

1 Answer
Apr 10, 2018

1/sqrt{x}

Explanation:

Don't worry, you don't need the chain rule for this one.

2 is a constant so it can be taken out of the expression.

d/dx[2sqrt{x}] = 2 d/dx[sqrt{x}] = 2 d/dx[x^{1/2}]

2 d/dx[x^{1/2}] = 2 times 1/2x^{-1/2} = x^{-1/2}

x^{-1/2} = 1/sqrt{x}