## Your Questions About Odds Calculator

Sandra asks…

## 3 days late, feel pregnant, neg test..could i be prego?

Hi, I ovulated (according to the ovulation **calculator**) 22,23,24,25. And i guess depending on how long my cycle was i could have ovulatd more. But those are the dates i remember. I had sex during these times. Cant remember exactly. but about a week after my ovulation i had light brownish/organish spotting. And i mean it was just like little spots on my panties. and when i wiped on one occasion after i noticed that it was light pink discharge. That day i started cramping and have been cramping since. My breast are off and on sore, seems like it depends on the time of day. I feel bloated, headaches. The cramping i am feeling is kinda odd…its almost like a stretchy type feeling. its hard to explain. Its low, like in the area you would feel your PMS cramps. I was due for my period on Oct 10th. took a test this morning and it was negative. Is it possible that i could still be pregnant even though the test said negative. My friends said i should wait a week after missed to test. Please help

### admin answers:

Yes, very very possible. Sometimes the hormone takes a few weeks to build up strong enough in the urine to get a positive result. I would suggest getting a blood test at your doctors office…those are way more accurate.

You sound like you have strong pregnancy symptoms so good luck!!

Ken asks…

## How to factor this rational function and characteristics?

(x^3+x^2-6x)/(x^2+2x-8)

I can’t factor the numerator to find the x intercepts and some other things, which i have to do ALGEBRAICALLY. Also this is what i have so far for the characteristics.

Domain – (-infinity, + infinity) ?

Range – (-infinity, -4) U (-4,2) U (2, +infinity)

Local Max (-6.-9) Local min (-2,-1) no absolute max/mins?

Increasing Intervals (-infinity, -9) (-1, +infinity)

Decreasing Intervals (-9, +infinity) (+infinity, -1)

Y intercept (0,0) and X Intercept (-3,0) < i used my **calculator** :

Holes & discontinuities ?

function is odd

rate of change?

end behavior?

### admin answers:

The numerator factors like this:

x^3+x^2-6x

Factor out the common factor:

x (x^2+x-6)

Factor what’s left in parentheses:

x (x + 3) (x – 2)

The denominator factors like this:

(x^2+2x-8) = (x + 4) (x – 2)

So you can cancel (x – 2) out of your original fraction, leaving:

(x (x + 3)) / (x + 4)

Now do your analysis again, making sure you notice that your domain is (x not equal to -4).

Linda asks…

## TI-89 Simplifying radicals question…?

Is there any way to get a TI-89 to simplify radicals involving variables with odd exponents?? Maybe there is some preloaded **calculator** command that I don’t know of, or program to download and install?

For example, sqrt(x^5). The **calculator** just spits out the sqrt(x^5) instead of x^2(sqrt(x)).

It simplifies radicals of numbers beautifully, and has not trouble if radicand is a monomial with even exponents, or even a trinomial that can be factored into a binomial squared.

Any suggestions would be greatly appreciated!!

Note: I’m asking this because a student of mine wants to check her homework as she goes and (like me) she has a TI-89. They haven’t learned fractional exponents yet, so the only form of answers she will easily understand is if it is simplified radical form, like x^2*√(x) . I could have sworn there was a way to do it in the 89, but so far, no luck!

(Thanks for the input, ssssh!)

### admin answers:

If you input √(75*x) * √(x^4)

with x^5 seperated like this

it will give you 5√3 * x^(5/2)

~~

Michael asks…

## Functions Stats and Trig help?

im not doing so well in this class, and its my last chance to bring it up

i need help with what a z-score is

and also how to find standard deviation and mean ect. on my **calculator** (putting the data in list and then calculating 1-var calc) which is what?

and i dont really understand sigma notation

and if the function is odd or even.

if you can help clarify that, or send a link to a practice test or simple explination site, thanks =]

### admin answers:

I been reading your questions…. And i think you just need a little help from a tutor and you will find other areas of your life pick up too…try it..and good luck

Laura asks…

## Period is 9 days late…what could be the reason?

Ok so, for the past year I have kept up with my period starting dates on a calendar. They can vary from 28 to 30 days so I started using the ovulation **calculator** on web-md because using the past 3 months dates, it generates an estimated start day for the next months period. It’s always been exactly right.

So after a year of it being accurate, I just realized yesterday that I never had my expected period and I’m actually 9 days late! My fiance & I had sex maybe twice since my last period on August 12th. I have no signs of pregnancy except for yesterday when I had to pee every half hour to an hour almost on the dot, today isn’t so bad. Very odd. but other than that- no cramps, no spotting.. I haven’t been feeling bad, maybe a bit tired but that’s it.

Let me know what you think it could be (pregnancy or other) it’s just not like me to be late at all. I haven’t been stressed but I did have a yeast inf about 2 wks ago.. can a yeast inf cause your periods to be late?

thanks!

I haven’t been stressed and I just realized I was late yesterday (maybe I could be stressing a little today lol) but not before. Also I haven’t taken a test because I think it’s still a little early.. I’ll wait until Monday as I will be 2 weeks late at that point..

We haven’t been trying to get pregnant (although it was in future plans) so I wouldn’t be stressing in a negative way but at the same time I’m not wanting to get my hopes up either..

I just didnt know if there might be another reason why it would be late that I’m not thinking of…

### admin answers:

Pregnacy or an underlying medical issue. You can be pregnant and never experience symptoms or maybe you just haven’t reached a sypmtom stage yet. Y. Infections can’t cause late periods. I say run to your local drug store and gra a home pregnancy test because my best guess is that you are…either that or schedule an appointment with your OBGYN ASAP! Good lUck!

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