Recent content by LAdidadida

Ohh! I see now, A should be (0, 3/sqrt2). I feel so stupid. Thanks for your help!

Sorry, I'm a bit confused. How come A,B and P aren't collinear? Aren't they on the same line (the normal to the hyperbola?)

Thanks for replying! I'm pretty sure it is a^2 + b^2 though, the equation was given in the question before and I quickly derived it to double check.

Homework Statement The normal to the hyperbola (x^2)/2 - y^2 = 1 at P (sqrt 3, sqrt 0.5) cuts the y-axis at A and the x-axis at B. Show that PA:PB = 2:1 Homework Equations Equation of normal to general hyperbola at (x1,y1) is x(a^2)/x1 + y(b^2)/y1 = a^2 + b^2 The Attempt at a Solution...

Homework Statement Find the general term of a sequence whose sum of the first n terms is S(n)=1/n(n+1) Homework Equations N/A The Attempt at a Solution I am able to work out T(n) as through T(n)=S(n)-S(n-1) which works out to be -2/n(n-1)(n+1) however this doesn't work for when...

I'm building a simple motor out of basic materials and at the moment its very similar to this one: http://www.exploratorium.edu/snacks/stripped_down_motor.html However it won't start unless I give it an initial push. One of the criteria I need to fulfill is that it needs to self-start...