Calculus Problems Urgent. Please help

finitehelp · 2009-09-13 06:51:00

If you can answer any of these problems please help....

1. Give the domain of the function.

f(x) = square root of 2-x

2. Compute and simplify the difference quotient [f(x + h) - f(x)]/h.

f(x) = 1x2 + 6x - 14

3. Find f'(x) when x has the given value.

f(x) = -3/x; x = -5

4. Find f'(x) when x has the given value.

f(x) = square root of x; x = 25

5. Find the equation of the tangent line to the curve when x has the given value.

f(x) = x2 - 4 ; x = 3

bobbym · 2009-09-13 07:17:46

Hi;

1) the domain of √ (x-2)

x-2 must satisfy x - 2 > = 0

So x = [2 , ∞)

2) If you mean x^2 + 6x - 14

answer = 2x + 6 + h

3) 3 / 25

4) 1 / 10

5) y = 6x - 13

Last edited by bobbym (2009-09-13 07:42:52)

finitehelp · 2009-09-13 07:34:40

Thank you bobbym you are a lifesaver!

bobbym · 2009-09-13 07:44:33

Hi finitehelp;

Actually I'm am humanoid in shape, but that is OK, glad to help.

Last edited by bobbym (2009-09-13 07:53:13)

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