This sketch shows the graph of 7=the square root of x - 1 (will draw if needed)

1. Differentiate y=the square root of x - 1
2. Find the co-ordinates of the point on the curve y=...at which the tangent is parallel to the line y=2x-1
3. Is the line y=2x-1 a tangent to the curve y=sqr root of x-1?

Question

This sketch shows the graph of 7=the square root of x - 1 (will draw if needed)

1. Differentiate y=the square root of x - 1
2. Find the co-ordinates of the point on the curve y=...at which the tangent is parallel to the line y=2x-1
3. Is the line y=2x-1 a tangent to the curve y=sqr root of x-1?

anonymous · Answer

$$y=\sqrt{x-1}$$
$$y'=\frac{1}{2\sqrt{x-1}}$$

anonymous · Answer

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