Mathematics - 5 August 2007

a creative and original solution is desired

2007-08-05 01:04:58 · 11 answers · asked by keitje2004 1

2007-08-05 01:03:45 · 2 answers · asked by avenger 2

what is the formula to find the volume of a square prism in which the sides of the edges are given?

2007-08-05 01:02:35 · 4 answers · asked by avenger 2

Evaluate the line integral if F(x,y,z)=e^x i +e^y j + e^z k


-R(t)= t i t^2 j + t^3 k

0

-Please do WRITE ALL THE SOLUTIONS, for me to understand well.

-extended thanks!!! :-)

2007-08-05 01:01:19 · 3 answers · asked by mjmg 1

I know the answer = 2 + √2

but it didn't work out when i tried to calculate it
i did it by equating coefficents

20 + 14√2 = (d + e √2)^3
I expanded the brackets and equate coefficients with and without √2, and got these 2 equations

d^3 + 6de^2 = 20
2e^3 + 3ed^2 = 14

and I am having major difficulty in solving them
the equations are correct, by substituting d = 2 and e = 1

So the problem is, how to solve these 2 equations, i tried the substitution method and it got up to a polynomial of d or e to the power of 9, which is a cubic equation of (d or e) cube, and i know it can be solved by the way of solving cubic equations, but this seems to be too much of a trouble for an answer of 1 and 2, so, the question is...... does anyone have a better insight in solving those equations

Help us out please! Thank you very much!

2007-08-05 00:44:58 · 3 answers · asked by kwanylongy 2