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The equation of a curve is xy^2= x^2 +1. Find dx/dy in terms of x and y, and hence find the coordinates of the stationary points on the curve.

dy/dx = (2x-y 2 )/(2xy)Stationary points: (1, root(2)) , (1, -root (2))
RS
Answered by Rishi S. • Maths tutor
9485 Views

How to distinguish between voluntary and involuntary manslaughter

In both cases a death has occurred. We all know that for someone to be guilty of murder they must have satisfied the actus reus and the mens rea, they must have unlawfully caused the death and they must have...
LO
Answered by Lisa-Marie O. • Law tutor
31068 Views

Why is space important in Middleton and Rowley's The Changeling?

First of all, it's definitely safe to say that space is one of the play's key themes. We see it in lots of different ways - but in the broadest sense, you should notice how the play moves from a wide open sp...
DE
4691 Views

How do I expand a bracket to a negative power if it doesn't start with a 1.

Okay so consider (2 + x)^-1, we can only do the expansion we know if the bracket starts with a 1, to fix this we can factor a 2 out of the bracket so that it becomes (2(1 + x/2))^-1. Then by our rules of pow...
SM
Answered by Shaun M. • Maths tutor
4535 Views

How should we answer a compare and contrast question in our Language exam?

Approach this question as if you’re having an argument with yourself about what the author meant and why, in which neither side agrees or will budge. The stronger side will shine through. Do not panic! First...
JH
Answered by Jake H. • English tutor
10050 Views