Distribution homework

1. May 21, 2012

robertjford80

1. The problem statement, all variables and given/known data
This is a calc problem but it's the algebra part I'm having trouble with:

3. The attempt at a solution

[16(1+h)2 - 16(1)2]/h

[16 + 32h + 16h2 - 162]/h

= 16/h + 32 + 16h - 162

this is a calc problem so h approaches zero

= 32 + 16h - 162

= 16(h + 2) - 162

I can't figure out why - 162 disappears.

Last edited: May 21, 2012
2. May 21, 2012

robertjford80

Re: distribution

<deleted>

3. May 21, 2012

Infinitum

Re: distribution

What happened to that 16/h?? Surely, as h -> 0 16/h is -not- equal to 0.

Try taking the 16 common out of the original expression, giving you

$$\frac{16((1+h)^2-1)}{h}$$