can't get this!!!
Hi there,
I have a question that I cannot solve. Here it is.
\frac{1}{\sqrt(4-2\sqrt3)}=x+y\sqrt3
then what is x^2+y^2?
All I did was finding what left hand side stood for. It equals
\frac{\sqrt3 + 1}{2}
Any help?
\int_a^b (x-x^2)dx
What values of a and b make this integral's value maximum? I have tried to do it but cannot get it. I know that the maximum value of x-x^2 is 0,25. but I'm stuck from there.
I try to write the integral in the form of a riemann sum but (b-a)s cancel each other.what am I to...
Hi,
I have a problem with the following problem. We have to write x in terms of a.
x^2=y+a
y^2=z+a
z^2=x+a
I have done some work but all I got is eighth degree polinomial and there is no easy wayof solving it in terms of a as far as I know. This is what I have
((x^2-a^2)^2-a)^2=x...
Hello there,
The tests for university is fast approaching, but I cannot make my mind up which way to go. Even now, I study calculus and some physics, and each time I start studying I feel awestruck, I totally adore natural sciences. But there remains a problem. Here in Turkey, being a scientist...
Hi all,
I've come by an interesting while studying. Here it goes
The volume V=x^3 of a cube of with edges of length x increases by an amount \Delta V when x increases by an amount \Delta x . Show with a sketch how to represent \Delta V geometrically as the some of the volumes of
(a)...
Let P(x,a) and Q(-x,a) be two points on the upper half of the ellipse
\frac{x^2}{100}+\frac{(y-5)^2}{25}=1
centered at (0,5). A triangle RST is formed by using the tangent lines to the ellipse at Q and P.
Show that the area of the triangle is
A(x)=-f'(x)[x-\frac{f(x)}{f'(x)}]^2...
Hi I have this question that is driving me mad any help is appreciated.
An airplane is flying at altitude H when it begins its decent to an airport runway that is at horizontal ground distance L from the airplane. Assume that the landing path of the airplane is the graph of a cubic polynomial...
Your thoughts about these books???
Hello there,
I am on the brink of buying some books from amazon.com and I would like to have your opinions on some of them. Feynman Lectures and QED are sure to be bought. The others are listed below.
Riemann's Zeta Function
Prime Obsession
What Do You...
Hi all,
I've been thinking on this a lot but couldn't come up with an answer so I need your help. I've seen this in Thomas' Calculus 10th edition. Anyway here goes the problem
A marathoner ran the 26.2 mi New York City Marathon in 2.2 h. Show that at least twice the marathoner was running at...