a. Determine all values for for which exists.

b. Find an expression for .

Here are my answers..are they correct?

a. All real numbers not equal to 1

b.

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- Oct 24th 2009, 07:43 PMlive_laugh_luv27Derivative of function- tangent/normal

a. Determine all values for for which exists.

b. Find an expression for .

Here are my answers..are they correct?

a. All real numbers not equal to 1

b. - Oct 24th 2009, 07:46 PMProve It
- Oct 25th 2009, 11:35 AMlive_laugh_luv27
ok, thanks.

- Oct 25th 2009, 11:38 AMlive_laugh_luv27
2 additional questions:

1) Find line tangent to the curve at

2) Find line normal to the curve at and determine the cooridinates of another point where this line intersects the graph.

Here is what I came up with:

1)

2)

Is this correct? I'm unsure what the second part of the second question is asking. Any help is appreciated.