Mathematics - 7 June 2007

Member since: June 07, 2007
Total points: 83 (Level 1)
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niks
S Pls help me solve this?
given that cosA+cos^2A=1
prove that
sin^12A+3sin^10A+3sin^8A+
sin^6A+2sin^4A+2sin^2A-2=
1

2007-06-07 23:48:54 · 2 answers · asked by Anonymous

X^2+6X=(X+h)^2+K

FIND THE VALUES OF K AND OF X.

2007-06-07 23:40:58 · 5 answers · asked by AV 3

given that cosA+cos^2A=1
prove that
sin^12A+3sin^10A+3sin^8A+sin^6A+2sin^4A+2sin^2A-2=1

2007-06-07 23:34:35 · 3 answers · asked by Anonymous

2007-06-07 22:49:15 · 8 answers · asked by asimovll 3

If Σ(n+1)! / 3^n converges

2007-06-07 22:31:47 · 2 answers · asked by headless_cross 2

2007-06-07 21:33:36 · 9 answers · asked by Anonymous

(since calculators is related to maths, im posting it here)

i think this is one of the stupidest question ever posted

but im just wondering, why does almost everyone in the world press the "C" or "AC" which is the clear or all clear ( i think ) button of a calculator repeatedly after a calculator before going onto the next one??

i mean why do they spam the clear button like as though it were a ps controller button, haha

if calculators had games in them, then it wouldnt be strange, but sadly they dont.

so why?

2007-06-07 21:24:32 · 8 answers · asked by Anonymous

What does the second derivative of a function represent relative to the first derivative? Explain.

This is the last question on my homework and it has me flummoxed!
If Im correct the first derivative represents the rate of change of y relative to x. So does that mean the second derivative represents the rate of change of the rate of change (aka the acceleration of change?) Please use F(x)=x^2 and help me out! :'(

2007-06-07 21:13:43 · 6 answers · asked by Omer K 2

Let the sum of its digits equal a, the sum of the digits in a equal b, and the sum of the digits in b equal c. What does c equal?

2007-06-07 21:08:31 · 4 answers · asked by Math 7

2007-06-07 21:02:35 · 4 answers · asked by sbjctvtyfmprtnc 1

f(x,y) = ((x^4)/(y^4)) + ((y^4)/(x^4)) - ((x^2)/(y^2)) - ((y^2)/(x^2)) + (x/y) + (y/x)

2007-06-07 20:51:27 · 4 answers · asked by Math 7

the engineering calculator

2007-06-07 20:43:56 · 5 answers · asked by bahare m 1

Find the dimensions of the rectangle of largest area that can be inscribed in the ellipse (x^2)/(a^2) + (y^2)/(b^2) = 1. (the answer may only depend on a and b and assume a is less than or equal to b).

2007-06-07 20:37:04 · 4 answers · asked by helloluiis 3

The book states to "solve the equaction in the complex number":

x^2+x+1=0

2007-06-07 20:33:31 · 10 answers · asked by a100 1

2007-06-07 20:28:46 · 4 answers · asked by Anonymous

16x^3 + 54y^6

I can see that you take a (2) out and then you have cubes (8x^3)+(27y^6), but then what do you do? Any experts out there?

2007-06-07 20:23:01 · 8 answers · asked by Burnt Toast 1

sum from 2 to inf of 1/(n*(ln n)^2)

I know use Integration but I get u=ln n and go till the end and I get
0+(1/ln2)
which converges or diverges or did I get that right?

2007-06-07 20:14:50 · 3 answers · asked by fcb1012 2

Given that x is sufficiently small for x^3 and higher powers of x to be neglected and higher powers of x to be neglected, and that
cos x - 4 sin x = 6x,
show that a quadratic equation for x is
x^2 + 20x - 2 = 0.
Hence find an approximate value for x, giving your answer correct to 3 significant figures.

2007-06-07 20:03:58 · 3 answers · asked by Anonymous

from the point to the line?

2007-06-07 19:54:30 · 12 answers · asked by X the Unknown 3

2007-06-07 19:40:27 · 3 answers · asked by Rajesh S 1

Kwenziee
y= 350 + 0.015(x)
Michael:
y=0.052x


hwo do v graph it..can u tll me da praph numbers....x is time(month)...y is money($)

2007-06-07 19:38:08 · 2 answers · asked by Farida 2

Ok, here's the question from the book:

Factor the following expression and include a second degree expression as a factor.

16x^3 + 54y^6

What the heck are they talking about? What exactly do they want me to do? I've never heard the term, and they don't give any examples. Anyone know what they're talking about?

2007-06-07 19:26:36 · 4 answers · asked by Burnt Toast 1

Three years ago, Mark was twice as old as Diance. Four years from now, twice Mark's age will be three less than three times Diane's age. How old are they now?
PLease solve and show me step by step.

2007-06-07 18:35:28 · 5 answers · asked by carrieluver2 1

z=(2x^2+3y^2)exp(-x^2-y^2)

i am so confused about what to do after i get dz/dx and dz/dy

these two partial derivatives are so complicated, i don't no if it is possible to solve for points where there exists a horizontal tangent plane BY HAND.
if you know how to solve this question BY HAnd, NOT BY COMPUTER, please show me how.
thx

2007-06-07 18:34:15 · 4 answers · asked by Anonymous

1/(1+rad3-rad5)

2007-06-07 18:33:49 · 3 answers · asked by pochacco90630 1

David and Michael charged Mr. Jimenez $3,000 to
remodel his basement. To complete the project,
David worked 4 days alone, Michael worked 1 day
alone, and they worked 10 days together. If they
each received the same amount of money for each
day that they worked, how much of the $3,000 did
David receive?
(A) $1,800
(B) $1,750
(C) $1,680
(D) $1,575
(E) $1,200

2007-06-07 18:13:55 · 4 answers · asked by nirupam d 1

tan, cos, cot, sec, csc.

I know the answer is cosine, but WHY?

2007-06-07 18:04:41 · 4 answers · asked by Boa 1

could someone explain the steps to me on how to find the slope of its line (on a graph) from these substituted equations?

-6 = 3X + Y
10 = -5X - Y

-6 = 3X + Y
-6 - 3X = Y
-5X +6 +3X = 10
-2X +6 = 10
-2X = 4
X = -2
Y= 0

i hope my question makes sense...anyway, thanks for the help!

2007-06-07 17:54:57 · 6 answers · asked by Anonymous

2007-06-07 17:50:53 · 11 answers · asked by eswar rao 1

help with my lil cuzins homework please

2007-06-07 17:47:32 · 18 answers · asked by sweet pie 2