Recent content by link2110

oh i get it now, thanks!

so for [x2dy/dx + 2xy] why is the dy/dx on the first term?

x2y + xy2=7 [x2 + 2xy] + [2yx + y2] = 0 So that's what i get to, but where do i distribute d/dx into?

Homework Statement find dy/dx yx2+ xy2=7 Homework Equations The Attempt at a Solution xy(x+y)=7 2xy=(x+y) (x+y) = 7 2xy + x2+2xy +y2=0 2xy + dx/dy(x2+2xy+y2)=0 2xy +x2+dy/dx 2xy + dy/dx y2 dy/dx = (-2xy-x2)/(2xy + y2) The answer is actually (-y2+2xy)/(x2+2xy) Can...

Thank You :D

Thank you! I understand the first part and the overall concept, but I am confused as to how to find y/2.5=3.5/x...

my initial guess is 2X the size of the book...but I don't have a mathematical proof

If the book's edges are always touching the diamond's walls, then does the diamond always have the same area, no matter if it is stretched? I tried considering the centre of the box as the origin, and only looked at the first quadrant...basically a rectangle of dimensions 3.5 X 2.5 inside a...

Homework Statement A book with cover dimensions 5in x 7in is to be placed symmetrically in a diamond shaped gift box. What is the smallest possible area of the box? Explain how you know your answer is minimal. Homework Equations n/a The Attempt at a Solution i don't know how to...

Homework Statement wtihout using a graphing calc, find the rational roots of P(x) = 2x^4-5x^3+5x^2-5x+3 Homework Equations The Attempt at a Solution The answers are 1 and 3/2, because this is a homework question. I don't know how they got that though. If anybody can help me...

i think its because when the bonds decompose, it releases energy, given off in some form...that could make it dangerous...i have not done the calculations, you should try that...see if NCl3 has more or less energy than N2 + Cl2

You'll have better sucess if you use the General Astronomy Forum. Heres a link: https://www.physicsforums.com/forumdisplay.php?f=71"

maybe he found the answer? but then he should have deleted the post, not the question...o.O weird...

yep, and think that feedback loops don't apply in this condition, because a negative feedback loop would apply somewhere like your stomach for protein digestion, pepsin, pepsinogen and all the like :P

i don't really know how to explain it...but i know what it means...i don't know try to glean what you can off of my crappy explanation. :P