What is the derivative of y=sqrt(x-1) ?

The derivative of y=sqrt(x-1) is 1/(2sqrt(x-1))

What is the first derivative of y=sqrt(x-1) ?

The first derivative of y=sqrt(x-1) is 1/(2sqrt(x-1))

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derivative of

y = x - 1

\frac{1}{2 x - 1}

Solution steps

\frac{d}{d x} (x - 1)

Apply the chain rule:

\frac{1}{2 x - 1} \frac{d}{d x} (x - 1)

= \frac{1}{2 x - 1} \frac{d}{d x} (x - 1)

\frac{d}{d x} (x - 1) = 1

= \frac{1}{2 x - 1} \cdot 1

Simplify

= \frac{1}{2 x - 1}

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What is the derivative of y=sqrt(x-1) ?
The derivative of y=sqrt(x-1) is 1/(2sqrt(x-1))
What is the first derivative of y=sqrt(x-1) ?
The first derivative of y=sqrt(x-1) is 1/(2sqrt(x-1))