# Homework Help: Limit with a constant

1. Oct 2, 2007

### EvilBunny

1. The problem statement, all variables and given/known data

Find in terms of the constant a

Lim h --- > 0

8 (a+h)² - 8a²
-----------------
h

3. The attempt at a solution

I have no idea how to even approach it so some pointers would be nice.
It hasn't been long since I started calculus. I am not sure weather we covered this
or not , classes are so heavy with content and passes quickly :s .

anyways what I am sure we have seen until now is

-IVT
- squeeze
- Limit laws

we have seen some things concerning continuity theorems altho am currently lost in them.

2. Oct 3, 2007

### lkh1986

Well,if you substitute in the value of h=0 directly, then you will get 0/h = 0.
So, why don't you try to expand the numerator? Then, proceed to the operations and eventually, the h at the denominator will be cancelled out.

3. Oct 3, 2007

### EvilBunny

well I end up with 16a = something . am giong to look at it more

Last edited: Oct 3, 2007
4. Oct 3, 2007

### EvilBunny

huh.. well the answer Is 16a altho I don't really understand it.

5. Oct 3, 2007

### EvilBunny

Ooo I get it now well thanks for your time.

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