Search over 10,000 free study notes

The heartbeat is started at a specialised area of the right atrium, known as the sinoatrial node (SAN); the SAN sends out the waves of depolarisation, resulting in contraction of the card...

The French imparfait of the verbs has the same use as the English past continuous: it refers to an action which was ongoing in the past until interrupted.

Use the chain rule as this is a composite function. Let u=2x+5.So the original equation becomes y=(u)^2.Using the chain rule: dy/dx = dy/du * du/dxdy/du = 2udu/dx = 2So dy/dx= 4uSince u=2x+5, dy/dx = 4(2x...

This is because when an organism dies there is no source of ATP, without this source of ATP ant myosin heads attached to the actin binding site cannot detach therefore leaving the muscles in a contracted ...

Rearranging gives:4cos(x)-1 = 2sin(x)tan(x) Substituting in tan(x)=sin(x)/cos(x) gives:4cos(x)-1 = 2sin(x)(sin(x)/cos(x))2sin²(x)=4cos²(x)-4cos(x)Substituting in 2sin^2<...