Mathematics - 26 November 2007

Let f be the function defined by f(x) = (x^2-3)e^x for all real numbers x.

a. For what value of x is f increasing?

b. Find the x-coordinate of each point of inflection of f.

c. Find the x- and y-coordinates of the point, if any, where f(x) attains its absolute! minimum.

2007-11-26 09:30:16 · 3 answers · asked by hello. 1

How can I xpress the in miles per hour:
1) 1 miles in 4 mins
2) 21,120 ft in 4 hours
Show work
ANOTHER PROBLEM:
hUMAN HAIR grows at a rate about .35mm per day. How much does it grow in 30 days?
Thanx

2007-11-26 09:29:14 · 7 answers · asked by Saya 2

how do I find the log of:

1. Log(sub12) 1

2. Log(sub12) 12

3. Log(sub12)144

2007-11-26 09:25:28 · 5 answers · asked by Matty B 3

GOD I HATE MATHS

2007-11-26 09:21:16 · 6 answers · asked by K Rigby 1

| 10 - 4x | ≤ 2

≤ (less than or equal to)

2007-11-26 09:18:36 · 9 answers · asked by Anonymous

use the numbers 4 4 4 4 only one time

2007-11-26 09:18:32 · 6 answers · asked by stephanie n 1

Alright I have 2 questions...

First:
Is the intersection of two planes another plane?

And:
Are verticles ONLY equal if two lines are parallel and cut by a transversal?

Thanks if you can help.
I know I sorda cheated asking two questions, but Geometry is probably the most confusing thing ever.

2007-11-26 09:10:17 · 9 answers · asked by Gleenn 1

1. 4 sqrt(2x-1) = 2 was told square both sides which then gets 2x-1^4=2^4 which eventually becomes 2x=17 so X=8.5. Why didn't the 2X get a "^4" added to it?

2. sqrt (-12) = 2i sqrt 3 - what happened to the negative?

2007-11-26 08:59:35 · 5 answers · asked by B K 1

1. for a solve1/a+1/b=1/c
2. for x solve y=-3x+2
3. for s solve 2=(x-m)/5

2007-11-26 08:56:59 · 2 answers · asked by brock.young 1

integers

2007-11-26 08:56:08 · 35 answers · asked by Jonathan J 1

2007-11-26 08:53:19 · 2 answers · asked by Anonymous

highway safety engineers can use the formula
d= 0.05s^2+1.1s to estimate the minimum stopping distance d in the feet for a vehicle traveling s miles per hour. If a car is able to stop after 125 ft. what is the fastest it could have been traveling when the driver first sppled the brakes?

2007-11-26 08:50:02 · 4 answers · asked by andy l 1

what is 83 cm, in inches ?

2007-11-26 08:49:23 · 0 answers · asked by Anonymous

5 cm/min = __ m/week
answerwith work
thanx

2007-11-26 08:46:20 · 4 answers · asked by Saya 2

| x + 12 | > 36

What can X be to make that statement true?

2007-11-26 08:42:31 · 4 answers · asked by Anonymous

This equlilibrium state of affairs contiued for quite a while until on January 1 2006 the farmer fixed the holes in the fence, so that foxes could no longer enter.

How many rabbits will be there on January 1, 2008?

2007-11-26 08:40:46 · 4 answers · asked by Alexander 6

Simplify (-7x-14)/(10x+20)

2007-11-26 08:37:43 · 9 answers · asked by Anonymous

a) for what values of x ∈ R is the expression defined?

b) for what values of x ∈ R is the expression = 0?

c) for what values of x ∈ R is the expression > 0?

d) for what values of x ∈ R is the expression < 0?

e) give a sign chart for the expression.

2007-11-26 08:36:10 · 1 answers · asked by lexcollect 1

I understand how to foil and everything, (A+B)(C+D) = AC+AD+BC+BD...

but I just received a question that doesn't work with this method.
(t+1)(t[sqared] - t +1)
There are three coefficients in the second set and I do not know what to do.

2007-11-26 08:35:35 · 10 answers · asked by Barron 2

I have to describe in complete sentences the steps to be taken in order to solve the log equation.

2007-11-26 08:34:18 · 6 answers · asked by Anonymous

Part 2: An application of a rational function is T = (AB)/(A+B), which gives the time, T, it takes for two workers to complete a particular task where A & B represent the time it would take for each individual worker to complete the identical task.

a) The monthly reports are due and the department manager has decided to try and accelerate the completion of the report by assigning a team of two workers the task. Mary has completed the monthly reports in an average of 6 hours over the past few months. John, who had worked in Mary's capacity prior to a change in assignments, used to complete the task in 8 hours. How quickly will Mary and John finish the report if they work together?

b) The very next month, both Mary and John are out sick. The manager knows that Skip can do the reports in 12 hours working alone, but the manager needs the work done in 4 hours. He needs to choose a staff member to work with Skip. How quickly would the other staff member have to complete the report working alone if the two hope to complete the report in 4 hours?

2007-11-26 08:30:27 · 3 answers · asked by dc 1

Okay. Normally i know how to find the maxima or minima but for some reason this one is throwing me off.. Can i get some help?

y=5x^2 + x

Please and Thank you!

2007-11-26 08:28:55 · 3 answers · asked by chelsie r 2

>I A< the 1st letter of the alphabet >M< the 13th letter of the Alphabet 1+9+13=23
Ex 3:14 "I am who I am." Tell them "I AM" sent you....
What about you do you know 23?

2007-11-26 08:26:37 · 20 answers · asked by Anonymous

One inch of rain typically yields 10 inches of snow (Though this varies depending on the density of the flakes so less rain can produce more snow.)

This is not impossible.

2007-11-26 08:24:24 · 2 answers · asked by Dylan 2

Ok there is only 19 days left in the semester.I have an A in all my other classes.I have 2 test left and a project. The project can bring me up to a 65. However I still have to get a 70 to pass. My record of taking test in this class is sadly abysmal. I am truly worried as I will get kicked out of my Honor classes if I fail math.What can I do I tried tutors, I spoke with my teacher, yet I still fail. The test are truly difficult for me. Yet I understand the material. I am in 9 grade and honestly this is seriously stressing me. I was a good Algebra student but geometry just agitates me.

2007-11-26 08:19:30 · 6 answers · asked by Anonymous

math, simplify

2007-11-26 08:16:51 · 4 answers · asked by Dee Dee 1

math. simplify

2007-11-26 08:15:50 · 5 answers · asked by Dee Dee 1

How do I verify an identity? The problem is:

tan2(theta) + cot2(theta) / sec2(theta) = csc2(theta)

2007-11-26 08:10:54 · 2 answers · asked by Anonymous

a) give an equation for the line L⊥, perpendicular to L, through P.

b) Where does L⊥ meet L?

2007-11-26 08:10:48 · 3 answers · asked by lexcollect 1

is anyone doesnt know GCF means greatest common factor

2007-11-26 08:00:40 · 3 answers · asked by RiSSYDOLL<3 2