# Thread: standard parts in calc

1. ## standard parts in calc

I have several problems here dealing with the standard part of numbers in my Calc for Bio class that im unsure of how to deal with.

Find the standard part of:

1.) (H+1)^3 - H^3 / H^2 - 3H
where H is an infinite number

2.) (3^H + 1) ^2 / 3^2H

Ive tried manipulating the equation in various ways an always seem to get a 0/x or x/0 when there shouldnt be a 0 in the numerator or denominator. Theres also basically no help to be found on the net. Help would be appreciated. Thanks

2. Originally Posted by Coastal
dealing with the standard part of numbers in my Calc for Bio class
This is very unusual language, possibly specific to your text book or instructor. Try to add better explanations of what you are doing. Not everyone uses the same terminolgy. For example, "infinte number" really is not a meaningful term. It is very, very poorly defined.

1.) (H+1)^3 - H^3 / H^2 - 3H
Expand the numerator.

H^3 + 3H^2 + 3H + 1 - H^3 = 3H^2 + 3H + 1

Now that we have $\frac{3H^{2} + 3H + 1}{H^{2} - 3H}$, I'm going to guess the answer is 3.

The second is similar. Expand the numerator and see what happens.