# How to find the equation of the tangent to y=√x−1 at the point where x=t ?

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(a) Find the equation of the tangent to #y=sqrtx−1# at the point where #x = t# .

(b) Hence find t and the equation of the tangent if the tangent passes through the origin.

(c) Draw a sketch.

(a) Find the equation of the tangent to

(b) Hence find t and the equation of the tangent if the tangent passes through the origin.

(c) Draw a sketch.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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