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How does the heart pump blood around the body?

The easiest way to think of the human heart is as 2 separate pumps in one loop. The first pump is the right side of the heart, which receives deoxygenated blood from the systemic circulation (the body). This...
AS
Answered by Alice S. • Biology tutor
11092 Views

Write down the values of (1) loga(a) and (2) loga(a^3) [(1) log base a, of a (2) log base a of (a^3)]

Let's first go to the whiteboard where I will explain what a logarithm is. The equation, loga(b) = x, could be re-written into the form, a^x = b. This is true for all logarithmic equations. There is a rule f...
SH
Answered by Sohail H. • Maths tutor
14571 Views

How do I set myself apart from other people taking the exam, so I get a higher grade.

Well, in Politics in particular, examiners are looking for evidence that you are a student that understands and can talk confidently about complex political phenomena. Do this by making it clear that you kno...
JB
Answered by James B. • Politics tutor
3849 Views

Find the stationary points of the curve given by the following function: f(x) = x^2 + 5x + 2

Differentiate the curve to get the gradient function: f'(x)= 2x + 5. Solve for x when f'(x) = 0 --> 2x + 5 = 0, 2x = -5, x = -5/2 Substitute into the original equation to find y: (-2.5)^2 + 5 * -2.5 + 2 =...
TD
Answered by Tutor49585 D. • Maths tutor
4771 Views

The curve C has equation x^2 + 2xy + 3y^2 = 4. Find dy/dx.

Here, we have to use implicit differentiation, along with the product rule. Remember that the product rule is (vu)' = vu'+uv'. Moving through the equation we have: x^2+2xy+3y^2 = 4 ==> 2x +2y + 2x*(dy/dx)...
CB
Answered by Chris B. • Maths tutor
13037 Views