Mathematics - 7 October 2007

1. f(x)= tan(3^x) has an interval in [0, 1.4] what's the derivative at this point.
2. consider the curve: 2y^3+6x^2y-12x^2=6y=1
dy/dx=(4x-2xy)/(x^2+y^2+1)
...write an equation of each horizontal tangent line to the cruve.
...the line through the origin with a slope of -1 is tangent to the curve at point p. find the x- and y-coordinate of point p.

2007-10-07 08:23:13 · 1 answers · asked by ix0heartx0u 1

2007-10-07 08:20:25 · 8 answers · asked by Anonymous

A stone is thrown vertically upward from the top of a house 60 feet above the ground with the initial velocity of 40 ft/sec.

a) At what time will the stone reach its maximum height?
b) What is its greatest height?
c) How long will it take the stone to pass the top of the house on its way down?
d) What is the velocity at that instant?
e) How long will it take the stone to strike the ground?
f) What is the velocity when it strikes the ground?

2007-10-07 08:14:07 · 1 answers · asked by daaznone90 2

i need some SERIOUS help on those two-column proofs, statement and reasons things!! I DO NOT GET THEM AT ALL!! i asked my teacher, my friends (which all kinda gave up on me because I didn't get how to do it no matter how well they explain)
I'm starting to lose all hope... and theres a test on it tomorrow
O_o

i'm pretty sure asking about it here isn't going to help me much either, but ehhh i'll try it anyways and pray someone out there could help me..

Here's one of the problems from my homework:
http://i24.tinypic.com/m9svw1.jpg

please teach me how to figure it out step by step and please be as specific as you possibly can!

2007-10-07 08:12:50 · 3 answers · asked by BLEH 1

3/5*4*10-6=18

insert parenthesis and other grouping symbols in the appropriate place to make a true statement.

2007-10-07 08:07:59 · 7 answers · asked by grace 1

2007-10-07 08:06:38 · 8 answers · asked by math 1

Rex rode his bicycle 300 kilometers. Three tires were used equally in accumulating this distance. How many kilometers of wear did each tire sustain?

2007-10-07 08:02:33 · 11 answers · asked by Brian M 1

my options are a. no solution b. 0 c. 1 d. identify (don't even know what that means

2007-10-07 07:52:24 · 8 answers · asked by me 1

The formula g(x) = 5/9 (x - 32) is used to convert from x degrees Fahrenheit to y degrees Celsius. Can you explain how to show that f and g are inverse functions?

2007-10-07 07:50:51 · 2 answers · asked by damasta_007 1

perform the indicated operation

2007-10-07 07:41:07 · 6 answers · asked by Anonymous

solve on the interval 0 < equal to theta < 2pi


D) cos(2theta) = 2 - 2 sin^2 theta

E) cos (2theta) + 5 cos theta + 3 = 0


please help and explain, thanks!!

2007-10-07 07:38:27 · 1 answers · asked by Anonymous

okay well i had 100 homework problems and i couldnt get these ones..so please help me and show the work and tell me how you got it..like explain so i can understand..thanks so SO much ..greatly appreciated..10 points to most accurate answer!


ORDER THE NUMBERS FROM LEAST TO GREATEST : 3and39/40 (fraction), 3 and 19/20(fraction), 3and 1/2(fraction)
a. 3and39/40 ,3and 1/2,3 and 19/20
b. 3and 1/2,3 and 19/20,3 and39/40
c. 3 and 19/20, 3 and39/40, 3and 1/2

NAME THE PROPERTY
7+(4+4)=(7+4)+4
a. inverse property of addition
b. associative property of addition
c.commutative property of multiplication

2= 10+z divided by -3.(negative 3)
please show work!
a.-4
b.-16
c.-5

WHICH EQUATION IS AN IDENTITY?
a.11-(2v+3)=-2v-8
b. 5w+8-w=6w-2(w-4)
c. 7m-2=8m=4-m

2007-10-07 07:36:32 · 3 answers · asked by Anonymous

-pi(sinpix)= 0
What two ansers should i get? i got x=0 for sinpix and -pi will never equal zero

2007-10-07 07:32:08 · 9 answers · asked by Anonymous

2007-10-07 07:31:00 · 1 answers · asked by Mr. Problem 1

Linda and Dave leave simultaneously from the same starting point biking in opposite directions. Linda bikes at 7 miles per hour and Dave bikes at 9 miles per hour. How long will it be until they are 24 miles apart from each other?

a. 12 hrs
b. 2 / 3 hrs
c. 8 / 21 hrs
d. 1 1 / 2 hrs

2007-10-07 07:30:59 · 5 answers · asked by . 1

2007-10-07 07:28:02 · 7 answers · asked by . 1

2007-10-07 07:26:25 · 2 answers · asked by Mr. Problem 1

Show that x,y,z are never three terms (not necessarily consecutive)of an A.P.

2007-10-07 07:24:55 · 5 answers · asked by Anonymous

use implicit differentiation to find an equation of the tangent line to the curve at the given point.

2007-10-07 07:24:22 · 2 answers · asked by yakov59 1

2007-10-07 07:23:09 · 5 answers · asked by . 1

2007-10-07 07:21:39 · 3 answers · asked by . 1

3x+129+3x+27=180
thanks.

2007-10-07 07:19:59 · 7 answers · asked by Maggie 2

Algebra help! the question states perform the indicated operation

2007-10-07 07:17:56 · 5 answers · asked by nabs l 1

2007-10-07 07:15:34 · 9 answers · asked by . 1

The ˇ5 in my equation means that the base is 5. I was thinking that the answer is ;

logˇ5 25√5
logˇ5 25 (Square root of 5 which is 2.236067978)
logˇ5 55.9016994
= 2.5

Does anyone else have any other ideas?

2007-10-07 07:09:47 · 4 answers · asked by Dylan Rose 1

I am really stumped at this problem. I tried Googling it and Wikipeding it but no luck. Any help? Please include a reference.
**********************************************************************
The host of a party turned to a guest and said, "I have three daughters and I will tell you ow old they are. The product of their ages is 72. The sum of their ages are my house number. How old is each?"

The guest rushed to the door, looked at the house number, and informed the host that he needed more information. The host then added, "The oldest likes chocolate pudding." The guest then announced the ages of the three girls.

What are the ages of the three daughters? (Hint: All the ages are whole numbers)
**********************************************************************
HELP PLEASE??

2007-10-07 07:00:44 · 3 answers · asked by i LoVe To HuG<3 2

Evaluate the limit:

Lim [(2x+1)^3 (x-3)] / (x^2 + 1)^2
x->infiniti

10 points to whoever solves it first (or is helpful to me in solving it)
PS: show work plz

2007-10-07 06:59:46 · 2 answers · asked by Anonymous

The van that you are using to move can hold 16 moving boxes. Each box can hold 60 pounds of books or 15 pounds of clothes.



Let b represent the no. of boxes filled w/ books. Write a function that represent the total weight w of boxes in the van

2007-10-07 06:58:20 · 1 answers · asked by Anonymous

simplify and write your answer to the positive exponent.

I think the answer is m^4, is this correct?

2007-10-07 06:57:37 · 1 answers · asked by Anonymous

also,
simplify 6√2 - 6√7
simplify √5 * √3
and
find the altitude of the triangle with sides L-13, R-13 and bottom 10.

Thanks for any help - I need it!

2007-10-07 06:51:32 · 5 answers · asked by earthgirl 2