Top answers

Find the equation of the tangent for x = 2cos (2y +pi)

So this initially looks like a tricky question- especially the way it is written in the form of x as a function of y, ( x(y) ), rather than what we normally see y as a function of x, ( y(x) ).The first thing...
TM
Answered by Tonia M. • Maths tutor
4154 Views

What does ADH do in the Kidney?

ADH or Anti Diuretic Hormone is a hormone that regulates the amount of water absorbed in the kidney. It acts on the collecting duct of the kidney, which is the last part of the nephron (a single functional u...
JH
Answered by Julia H. • Biology tutor
7752 Views

‘Theatre of the present is not as exciting as theatre of the past’ (30 Marks)

Title of the Play: The BacchaePlaywright: EuripidesDate Seen: 31 st July 2016Venue of the Production: Osterley Park I would argue that theatre of the present is more exciting than theatre of the past. Throug...
JS
Answered by Joseph S. • Drama tutor
2862 Views

Why is sin(t)^2 + cos(t)^2 = 1 true for all t?

To answer this we need to consider a circle of radius r centred at the origin, drawn in the x,y plane. We'll draw a right-angled triangle such that the hypotenuse is the radius, and say that the point where ...
MV
Answered by Matt V. • Maths tutor
4141 Views

(a) Use integration by parts to find ∫ x sin(3x) dx

The question asks for integration by parts. Therefore we need to differentiate one variable and integrate the other. First we need to decide which variable is going to be which. Algebra should always be diff...
GA
Answered by George A. • Maths tutor
8974 Views